Add LEVELDB_EXPORT macro to export public symbols.
gcc defaults to exporting all symbols, but other linkers do not. Adding the LEVELDB_EXPORT macro allows a project to set LEVELDB_SHARED_LIBRARY when building/linking with leveldb as a shared library. This is to allow leveldb to be created as a shared library on all platforms support by Chrome and enables a fix for https://bugs.chromium.org/p/chromium/issues/detail?id=764810. This also has the benefit of reducing the shared library size from 418863 to 380367 bytes (64-bit Linux). ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=171037148
This commit is contained in:
cmumford
Victor Costan
parent
542590d2a8
commit
4a7e7f50dc
28
Makefile
28
Makefile
@ -81,7 +81,7 @@ else
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STATIC_OUTDIR=out-static
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SHARED_OUTDIR=out-shared
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STATIC_PROGRAMS := $(addprefix $(STATIC_OUTDIR)/, $(PROGNAMES))
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SHARED_PROGRAMS := $(addprefix $(SHARED_OUTDIR)/, db_bench)
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SHARED_PROGRAMS := $(addprefix $(SHARED_OUTDIR)/, db_bench c_test)
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endif
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STATIC_LIBOBJECTS := $(addprefix $(STATIC_OUTDIR)/, $(SOURCES:.cc=.o))
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@ -98,6 +98,7 @@ SHARED_MEMENVOBJECTS := $(addprefix $(SHARED_OUTDIR)/, $(MEMENV_SOURCES:.cc=.o))
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TESTUTIL := $(STATIC_OUTDIR)/util/testutil.o
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TESTHARNESS := $(STATIC_OUTDIR)/util/testharness.o $(TESTUTIL)
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TEST_STATIC_OBJS := $(STATIC_OUTDIR)/port/port_posix.o $(STATIC_OUTDIR)/port/port_posix_sse.o $(STATIC_OUTDIR)/util/crc32c.o $(STATIC_OUTDIR)/util/histogram.o
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STATIC_TESTOBJS := $(addprefix $(STATIC_OUTDIR)/, $(addsuffix .o, $(TESTS)))
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STATIC_UTILOBJS := $(addprefix $(STATIC_OUTDIR)/, $(addsuffix .o, $(UTILS)))
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@ -112,6 +113,8 @@ ifneq ($(PLATFORM_SHARED_EXT),)
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# Many leveldb test apps use non-exported API's. Only build a subset for testing.
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SHARED_ALLOBJS := $(SHARED_LIBOBJECTS) $(SHARED_MEMENVOBJECTS) $(TESTHARNESS)
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SHARED_CXXFLAGS += -DLEVELDB_SHARED_LIBRARY
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SHARED_BUILD_CXXFLAGS += $(SHARED_CXXFLAGS) -DLEVELDB_COMPILE_LIBRARY
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ifneq ($(PLATFORM_SHARED_VERSIONED),true)
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SHARED_LIB1 = libleveldb.$(PLATFORM_SHARED_EXT)
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@ -386,13 +389,20 @@ $(STATIC_OUTDIR)/write_batch_test:db/write_batch_test.cc $(STATIC_LIBOBJECTS) $(
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$(STATIC_OUTDIR)/memenv_test:$(STATIC_OUTDIR)/helpers/memenv/memenv_test.o $(STATIC_OUTDIR)/libmemenv.a $(STATIC_OUTDIR)/libleveldb.a $(TESTHARNESS)
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$(XCRUN) $(CXX) $(LDFLAGS) $(STATIC_OUTDIR)/helpers/memenv/memenv_test.o $(STATIC_OUTDIR)/libmemenv.a $(STATIC_OUTDIR)/libleveldb.a $(TESTHARNESS) -o $@ $(LIBS)
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$(SHARED_OUTDIR)/db_bench:$(SHARED_OUTDIR)/db/db_bench.o $(SHARED_LIBS) $(TESTUTIL)
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$(XCRUN) $(CXX) $(LDFLAGS) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(SHARED_OUTDIR)/db/db_bench.o $(TESTUTIL) $(SHARED_OUTDIR)/$(SHARED_LIB3) -o $@ $(LIBS)
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$(SHARED_OUTDIR)/db_bench:$(SHARED_OUTDIR)/db/db_bench.o $(SHARED_LIBS) $(TESTUTIL) $(TEST_STATIC_OBJS)
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$(XCRUN) $(CXX) $(LDFLAGS) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(SHARED_CXXFLAGS) $(SHARED_OUTDIR)/db/db_bench.o $(TESTUTIL) $(TEST_STATIC_OBJS) $(SHARED_OUTDIR)/$(SHARED_LIB3) -o $@ $(LIBS)
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.PHONY: run-shared
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run-shared: $(SHARED_OUTDIR)/db_bench
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$(SHARED_OUTDIR)/c_test:$(SHARED_OUTDIR)/db/c_test.o $(SHARED_LIBS) $(TESTUTIL) $(TEST_STATIC_OBJS)
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$(XCRUN) $(CXX) $(LDFLAGS) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(SHARED_CXXFLAGS) $(SHARED_OUTDIR)/db/c_test.o $(TESTUTIL) $(TEST_STATIC_OBJS) $(SHARED_OUTDIR)/$(SHARED_LIB3) -o $@ $(LIBS)
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.PHONY: run-shared-db_bench
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run-shared-db_bench: $(SHARED_OUTDIR)/db_bench
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LD_LIBRARY_PATH=$(SHARED_OUTDIR) $(SHARED_OUTDIR)/db_bench
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.PHONY: run-shared-c_test
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run-shared-c_test: $(SHARED_OUTDIR)/c_test
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LD_LIBRARY_PATH=$(SHARED_OUTDIR) $(SHARED_OUTDIR)/c_test
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$(SIMULATOR_OUTDIR)/%.o: %.cc
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xcrun -sdk iphonesimulator $(CXX) $(CXXFLAGS) $(SIMULATOR_CFLAGS) -c $< -o $@
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@ -412,13 +422,13 @@ $(STATIC_OUTDIR)/%.o: %.c
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$(CC) $(CFLAGS) -c $< -o $@
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$(SHARED_OUTDIR)/%.o: %.cc
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$(CXX) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) -c $< -o $@
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$(CXX) $(CXXFLAGS) $(SHARED_BUILD_CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) -c $< -o $@
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$(SHARED_OUTDIR)/%.o: %.c
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$(CC) $(CFLAGS) $(PLATFORM_SHARED_CFLAGS) -c $< -o $@
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$(CC) $(CFLAGS) $(SHARED_BUILD_CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) -c $< -o $@
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$(STATIC_OUTDIR)/port/port_posix_sse.o: port/port_posix_sse.cc
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$(CXX) $(CXXFLAGS) $(PLATFORM_SSEFLAGS) -c $< -o $@
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$(CXX) $(CXXFLAGS) $(SHARED_BUILD_CXXFLAGS) $(PLATFORM_SSEFLAGS) -c $< -o $@
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$(SHARED_OUTDIR)/port/port_posix_sse.o: port/port_posix_sse.cc
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$(CXX) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(PLATFORM_SSEFLAGS) -c $< -o $@
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$(CXX) $(CXXFLAGS) $(SHARED_BUILD_CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(PLATFORM_SSEFLAGS) -c $< -o $@
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@ -61,7 +61,7 @@ PLATFORM_LDFLAGS=
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PLATFORM_LIBS=
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PLATFORM_SHARED_EXT="so"
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PLATFORM_SHARED_LDFLAGS="-shared -Wl,-soname -Wl,"
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PLATFORM_SHARED_CFLAGS="-fPIC"
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PLATFORM_SHARED_CFLAGS="-fPIC -fvisibility=hidden"
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PLATFORM_SHARED_VERSIONED=true
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PLATFORM_SSEFLAGS=
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@ -47,6 +47,7 @@ extern "C" {
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "leveldb/export.h"
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/* Exported types */
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@ -69,204 +70,178 @@ typedef struct leveldb_writeoptions_t leveldb_writeoptions_t;
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/* DB operations */
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extern leveldb_t* leveldb_open(
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const leveldb_options_t* options,
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const char* name,
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char** errptr);
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LEVELDB_EXPORT leveldb_t* leveldb_open(const leveldb_options_t* options,
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const char* name, char** errptr);
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extern void leveldb_close(leveldb_t* db);
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LEVELDB_EXPORT void leveldb_close(leveldb_t* db);
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extern void leveldb_put(
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leveldb_t* db,
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LEVELDB_EXPORT void leveldb_put(leveldb_t* db,
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const leveldb_writeoptions_t* options,
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const char* key, size_t keylen,
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const char* val, size_t vallen,
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char** errptr);
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const char* key, size_t keylen, const char* val,
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size_t vallen, char** errptr);
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extern void leveldb_delete(
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leveldb_t* db,
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LEVELDB_EXPORT void leveldb_delete(leveldb_t* db,
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const leveldb_writeoptions_t* options,
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const char* key, size_t keylen,
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char** errptr);
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extern void leveldb_write(
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leveldb_t* db,
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LEVELDB_EXPORT void leveldb_write(leveldb_t* db,
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const leveldb_writeoptions_t* options,
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leveldb_writebatch_t* batch,
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char** errptr);
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leveldb_writebatch_t* batch, char** errptr);
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/* Returns NULL if not found. A malloc()ed array otherwise.
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Stores the length of the array in *vallen. */
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extern char* leveldb_get(
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leveldb_t* db,
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LEVELDB_EXPORT char* leveldb_get(leveldb_t* db,
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const leveldb_readoptions_t* options,
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const char* key, size_t keylen,
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size_t* vallen,
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const char* key, size_t keylen, size_t* vallen,
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char** errptr);
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extern leveldb_iterator_t* leveldb_create_iterator(
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leveldb_t* db,
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const leveldb_readoptions_t* options);
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LEVELDB_EXPORT leveldb_iterator_t* leveldb_create_iterator(
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leveldb_t* db, const leveldb_readoptions_t* options);
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extern const leveldb_snapshot_t* leveldb_create_snapshot(
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leveldb_t* db);
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LEVELDB_EXPORT const leveldb_snapshot_t* leveldb_create_snapshot(leveldb_t* db);
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extern void leveldb_release_snapshot(
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leveldb_t* db,
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const leveldb_snapshot_t* snapshot);
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LEVELDB_EXPORT void leveldb_release_snapshot(
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leveldb_t* db, const leveldb_snapshot_t* snapshot);
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/* Returns NULL if property name is unknown.
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Else returns a pointer to a malloc()-ed null-terminated value. */
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extern char* leveldb_property_value(
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leveldb_t* db,
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LEVELDB_EXPORT char* leveldb_property_value(leveldb_t* db,
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const char* propname);
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extern void leveldb_approximate_sizes(
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leveldb_t* db,
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int num_ranges,
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const char* const* range_start_key, const size_t* range_start_key_len,
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const char* const* range_limit_key, const size_t* range_limit_key_len,
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uint64_t* sizes);
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LEVELDB_EXPORT void leveldb_approximate_sizes(
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leveldb_t* db, int num_ranges, const char* const* range_start_key,
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const size_t* range_start_key_len, const char* const* range_limit_key,
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const size_t* range_limit_key_len, uint64_t* sizes);
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extern void leveldb_compact_range(
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leveldb_t* db,
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const char* start_key, size_t start_key_len,
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const char* limit_key, size_t limit_key_len);
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LEVELDB_EXPORT void leveldb_compact_range(leveldb_t* db, const char* start_key,
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size_t start_key_len,
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const char* limit_key,
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size_t limit_key_len);
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/* Management operations */
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extern void leveldb_destroy_db(
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const leveldb_options_t* options,
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const char* name,
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char** errptr);
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LEVELDB_EXPORT void leveldb_destroy_db(const leveldb_options_t* options,
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const char* name, char** errptr);
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extern void leveldb_repair_db(
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const leveldb_options_t* options,
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const char* name,
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char** errptr);
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LEVELDB_EXPORT void leveldb_repair_db(const leveldb_options_t* options,
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const char* name, char** errptr);
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/* Iterator */
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extern void leveldb_iter_destroy(leveldb_iterator_t*);
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extern unsigned char leveldb_iter_valid(const leveldb_iterator_t*);
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extern void leveldb_iter_seek_to_first(leveldb_iterator_t*);
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extern void leveldb_iter_seek_to_last(leveldb_iterator_t*);
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extern void leveldb_iter_seek(leveldb_iterator_t*, const char* k, size_t klen);
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extern void leveldb_iter_next(leveldb_iterator_t*);
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extern void leveldb_iter_prev(leveldb_iterator_t*);
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extern const char* leveldb_iter_key(const leveldb_iterator_t*, size_t* klen);
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extern const char* leveldb_iter_value(const leveldb_iterator_t*, size_t* vlen);
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extern void leveldb_iter_get_error(const leveldb_iterator_t*, char** errptr);
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LEVELDB_EXPORT void leveldb_iter_destroy(leveldb_iterator_t*);
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LEVELDB_EXPORT unsigned char leveldb_iter_valid(const leveldb_iterator_t*);
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LEVELDB_EXPORT void leveldb_iter_seek_to_first(leveldb_iterator_t*);
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LEVELDB_EXPORT void leveldb_iter_seek_to_last(leveldb_iterator_t*);
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LEVELDB_EXPORT void leveldb_iter_seek(leveldb_iterator_t*, const char* k,
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size_t klen);
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LEVELDB_EXPORT void leveldb_iter_next(leveldb_iterator_t*);
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LEVELDB_EXPORT void leveldb_iter_prev(leveldb_iterator_t*);
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LEVELDB_EXPORT const char* leveldb_iter_key(const leveldb_iterator_t*,
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size_t* klen);
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LEVELDB_EXPORT const char* leveldb_iter_value(const leveldb_iterator_t*,
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size_t* vlen);
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LEVELDB_EXPORT void leveldb_iter_get_error(const leveldb_iterator_t*,
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char** errptr);
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/* Write batch */
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extern leveldb_writebatch_t* leveldb_writebatch_create();
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extern void leveldb_writebatch_destroy(leveldb_writebatch_t*);
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extern void leveldb_writebatch_clear(leveldb_writebatch_t*);
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extern void leveldb_writebatch_put(
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leveldb_writebatch_t*,
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LEVELDB_EXPORT leveldb_writebatch_t* leveldb_writebatch_create();
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LEVELDB_EXPORT void leveldb_writebatch_destroy(leveldb_writebatch_t*);
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LEVELDB_EXPORT void leveldb_writebatch_clear(leveldb_writebatch_t*);
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LEVELDB_EXPORT void leveldb_writebatch_put(leveldb_writebatch_t*,
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const char* key, size_t klen,
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const char* val, size_t vlen);
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extern void leveldb_writebatch_delete(
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leveldb_writebatch_t*,
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LEVELDB_EXPORT void leveldb_writebatch_delete(leveldb_writebatch_t*,
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const char* key, size_t klen);
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extern void leveldb_writebatch_iterate(
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leveldb_writebatch_t*,
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void* state,
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LEVELDB_EXPORT void leveldb_writebatch_iterate(
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leveldb_writebatch_t*, void* state,
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void (*put)(void*, const char* k, size_t klen, const char* v, size_t vlen),
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void (*deleted)(void*, const char* k, size_t klen));
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/* Options */
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extern leveldb_options_t* leveldb_options_create();
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extern void leveldb_options_destroy(leveldb_options_t*);
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extern void leveldb_options_set_comparator(
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leveldb_options_t*,
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LEVELDB_EXPORT leveldb_options_t* leveldb_options_create();
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LEVELDB_EXPORT void leveldb_options_destroy(leveldb_options_t*);
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LEVELDB_EXPORT void leveldb_options_set_comparator(leveldb_options_t*,
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leveldb_comparator_t*);
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extern void leveldb_options_set_filter_policy(
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leveldb_options_t*,
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LEVELDB_EXPORT void leveldb_options_set_filter_policy(leveldb_options_t*,
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leveldb_filterpolicy_t*);
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extern void leveldb_options_set_create_if_missing(
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leveldb_options_t*, unsigned char);
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extern void leveldb_options_set_error_if_exists(
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leveldb_options_t*, unsigned char);
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extern void leveldb_options_set_paranoid_checks(
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leveldb_options_t*, unsigned char);
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extern void leveldb_options_set_env(leveldb_options_t*, leveldb_env_t*);
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extern void leveldb_options_set_info_log(leveldb_options_t*, leveldb_logger_t*);
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extern void leveldb_options_set_write_buffer_size(leveldb_options_t*, size_t);
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extern void leveldb_options_set_max_open_files(leveldb_options_t*, int);
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extern void leveldb_options_set_cache(leveldb_options_t*, leveldb_cache_t*);
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extern void leveldb_options_set_block_size(leveldb_options_t*, size_t);
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extern void leveldb_options_set_block_restart_interval(leveldb_options_t*, int);
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LEVELDB_EXPORT void leveldb_options_set_create_if_missing(leveldb_options_t*,
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unsigned char);
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LEVELDB_EXPORT void leveldb_options_set_error_if_exists(leveldb_options_t*,
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unsigned char);
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LEVELDB_EXPORT void leveldb_options_set_paranoid_checks(leveldb_options_t*,
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unsigned char);
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LEVELDB_EXPORT void leveldb_options_set_env(leveldb_options_t*, leveldb_env_t*);
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LEVELDB_EXPORT void leveldb_options_set_info_log(leveldb_options_t*,
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leveldb_logger_t*);
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LEVELDB_EXPORT void leveldb_options_set_write_buffer_size(leveldb_options_t*,
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size_t);
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LEVELDB_EXPORT void leveldb_options_set_max_open_files(leveldb_options_t*, int);
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LEVELDB_EXPORT void leveldb_options_set_cache(leveldb_options_t*,
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leveldb_cache_t*);
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LEVELDB_EXPORT void leveldb_options_set_block_size(leveldb_options_t*, size_t);
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LEVELDB_EXPORT void leveldb_options_set_block_restart_interval(
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leveldb_options_t*, int);
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enum {
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leveldb_no_compression = 0,
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leveldb_snappy_compression = 1
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};
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extern void leveldb_options_set_compression(leveldb_options_t*, int);
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LEVELDB_EXPORT void leveldb_options_set_compression(leveldb_options_t*, int);
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/* Comparator */
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extern leveldb_comparator_t* leveldb_comparator_create(
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void* state,
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void (*destructor)(void*),
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int (*compare)(
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void*,
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const char* a, size_t alen,
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const char* b, size_t blen),
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LEVELDB_EXPORT leveldb_comparator_t* leveldb_comparator_create(
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void* state, void (*destructor)(void*),
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int (*compare)(void*, const char* a, size_t alen, const char* b,
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size_t blen),
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const char* (*name)(void*));
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extern void leveldb_comparator_destroy(leveldb_comparator_t*);
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LEVELDB_EXPORT void leveldb_comparator_destroy(leveldb_comparator_t*);
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/* Filter policy */
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extern leveldb_filterpolicy_t* leveldb_filterpolicy_create(
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void* state,
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void (*destructor)(void*),
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char* (*create_filter)(
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void*,
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const char* const* key_array, const size_t* key_length_array,
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int num_keys,
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LEVELDB_EXPORT leveldb_filterpolicy_t* leveldb_filterpolicy_create(
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void* state, void (*destructor)(void*),
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char* (*create_filter)(void*, const char* const* key_array,
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const size_t* key_length_array, int num_keys,
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size_t* filter_length),
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unsigned char (*key_may_match)(
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void*,
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const char* key, size_t length,
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unsigned char (*key_may_match)(void*, const char* key, size_t length,
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const char* filter, size_t filter_length),
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const char* (*name)(void*));
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extern void leveldb_filterpolicy_destroy(leveldb_filterpolicy_t*);
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LEVELDB_EXPORT void leveldb_filterpolicy_destroy(leveldb_filterpolicy_t*);
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extern leveldb_filterpolicy_t* leveldb_filterpolicy_create_bloom(
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LEVELDB_EXPORT leveldb_filterpolicy_t* leveldb_filterpolicy_create_bloom(
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int bits_per_key);
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/* Read options */
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extern leveldb_readoptions_t* leveldb_readoptions_create();
|
||||
extern void leveldb_readoptions_destroy(leveldb_readoptions_t*);
|
||||
extern void leveldb_readoptions_set_verify_checksums(
|
||||
leveldb_readoptions_t*,
|
||||
unsigned char);
|
||||
extern void leveldb_readoptions_set_fill_cache(
|
||||
LEVELDB_EXPORT leveldb_readoptions_t* leveldb_readoptions_create();
|
||||
LEVELDB_EXPORT void leveldb_readoptions_destroy(leveldb_readoptions_t*);
|
||||
LEVELDB_EXPORT void leveldb_readoptions_set_verify_checksums(
|
||||
leveldb_readoptions_t*, unsigned char);
|
||||
extern void leveldb_readoptions_set_snapshot(
|
||||
leveldb_readoptions_t*,
|
||||
LEVELDB_EXPORT void leveldb_readoptions_set_fill_cache(leveldb_readoptions_t*,
|
||||
unsigned char);
|
||||
LEVELDB_EXPORT void leveldb_readoptions_set_snapshot(leveldb_readoptions_t*,
|
||||
const leveldb_snapshot_t*);
|
||||
|
||||
/* Write options */
|
||||
|
||||
extern leveldb_writeoptions_t* leveldb_writeoptions_create();
|
||||
extern void leveldb_writeoptions_destroy(leveldb_writeoptions_t*);
|
||||
extern void leveldb_writeoptions_set_sync(
|
||||
leveldb_writeoptions_t*, unsigned char);
|
||||
LEVELDB_EXPORT leveldb_writeoptions_t* leveldb_writeoptions_create();
|
||||
LEVELDB_EXPORT void leveldb_writeoptions_destroy(leveldb_writeoptions_t*);
|
||||
LEVELDB_EXPORT void leveldb_writeoptions_set_sync(leveldb_writeoptions_t*,
|
||||
unsigned char);
|
||||
|
||||
/* Cache */
|
||||
|
||||
extern leveldb_cache_t* leveldb_cache_create_lru(size_t capacity);
|
||||
extern void leveldb_cache_destroy(leveldb_cache_t* cache);
|
||||
LEVELDB_EXPORT leveldb_cache_t* leveldb_cache_create_lru(size_t capacity);
|
||||
LEVELDB_EXPORT void leveldb_cache_destroy(leveldb_cache_t* cache);
|
||||
|
||||
/* Env */
|
||||
|
||||
extern leveldb_env_t* leveldb_create_default_env();
|
||||
extern void leveldb_env_destroy(leveldb_env_t*);
|
||||
LEVELDB_EXPORT leveldb_env_t* leveldb_create_default_env();
|
||||
LEVELDB_EXPORT void leveldb_env_destroy(leveldb_env_t*);
|
||||
|
||||
/* Utility */
|
||||
|
||||
@ -275,13 +250,13 @@ extern void leveldb_env_destroy(leveldb_env_t*);
|
||||
in this file. Note that in certain cases (typically on Windows), you
|
||||
may need to call this routine instead of free(ptr) to dispose of
|
||||
malloc()-ed memory returned by this library. */
|
||||
extern void leveldb_free(void* ptr);
|
||||
LEVELDB_EXPORT void leveldb_free(void* ptr);
|
||||
|
||||
/* Return the major version number for this release. */
|
||||
extern int leveldb_major_version();
|
||||
LEVELDB_EXPORT int leveldb_major_version();
|
||||
|
||||
/* Return the minor version number for this release. */
|
||||
extern int leveldb_minor_version();
|
||||
LEVELDB_EXPORT int leveldb_minor_version();
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /* end extern "C" */
|
||||
|
||||
@ -19,17 +19,18 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_CACHE_H_
|
||||
|
||||
#include <stdint.h>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/slice.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
class Cache;
|
||||
class LEVELDB_EXPORT Cache;
|
||||
|
||||
// Create a new cache with a fixed size capacity. This implementation
|
||||
// of Cache uses a least-recently-used eviction policy.
|
||||
extern Cache* NewLRUCache(size_t capacity);
|
||||
LEVELDB_EXPORT Cache* NewLRUCache(size_t capacity);
|
||||
|
||||
class Cache {
|
||||
class LEVELDB_EXPORT Cache {
|
||||
public:
|
||||
Cache() { }
|
||||
|
||||
|
||||
@ -6,6 +6,7 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_
|
||||
|
||||
#include <string>
|
||||
#include "leveldb/export.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
@ -15,7 +16,7 @@ class Slice;
|
||||
// used as keys in an sstable or a database. A Comparator implementation
|
||||
// must be thread-safe since leveldb may invoke its methods concurrently
|
||||
// from multiple threads.
|
||||
class Comparator {
|
||||
class LEVELDB_EXPORT Comparator {
|
||||
public:
|
||||
virtual ~Comparator();
|
||||
|
||||
@ -56,7 +57,7 @@ class Comparator {
|
||||
// Return a builtin comparator that uses lexicographic byte-wise
|
||||
// ordering. The result remains the property of this module and
|
||||
// must not be deleted.
|
||||
extern const Comparator* BytewiseComparator();
|
||||
LEVELDB_EXPORT const Comparator* BytewiseComparator();
|
||||
|
||||
} // namespace leveldb
|
||||
|
||||
|
||||
@ -7,6 +7,7 @@
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/iterator.h"
|
||||
#include "leveldb/options.h"
|
||||
|
||||
@ -24,13 +25,13 @@ class WriteBatch;
|
||||
// Abstract handle to particular state of a DB.
|
||||
// A Snapshot is an immutable object and can therefore be safely
|
||||
// accessed from multiple threads without any external synchronization.
|
||||
class Snapshot {
|
||||
class LEVELDB_EXPORT Snapshot {
|
||||
protected:
|
||||
virtual ~Snapshot();
|
||||
};
|
||||
|
||||
// A range of keys
|
||||
struct Range {
|
||||
struct LEVELDB_EXPORT Range {
|
||||
Slice start; // Included in the range
|
||||
Slice limit; // Not included in the range
|
||||
|
||||
@ -41,7 +42,7 @@ struct Range {
|
||||
// A DB is a persistent ordered map from keys to values.
|
||||
// A DB is safe for concurrent access from multiple threads without
|
||||
// any external synchronization.
|
||||
class DB {
|
||||
class LEVELDB_EXPORT DB {
|
||||
public:
|
||||
// Open the database with the specified "name".
|
||||
// Stores a pointer to a heap-allocated database in *dbptr and returns
|
||||
@ -150,13 +151,15 @@ class DB {
|
||||
|
||||
// Destroy the contents of the specified database.
|
||||
// Be very careful using this method.
|
||||
Status DestroyDB(const std::string& name, const Options& options);
|
||||
LEVELDB_EXPORT Status DestroyDB(const std::string& name,
|
||||
const Options& options);
|
||||
|
||||
// If a DB cannot be opened, you may attempt to call this method to
|
||||
// resurrect as much of the contents of the database as possible.
|
||||
// Some data may be lost, so be careful when calling this function
|
||||
// on a database that contains important information.
|
||||
Status RepairDB(const std::string& dbname, const Options& options);
|
||||
LEVELDB_EXPORT Status RepairDB(const std::string& dbname,
|
||||
const Options& options);
|
||||
|
||||
} // namespace leveldb
|
||||
|
||||
|
||||
@ -7,6 +7,7 @@
|
||||
|
||||
#include <string>
|
||||
#include "leveldb/env.h"
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/status.h"
|
||||
|
||||
namespace leveldb {
|
||||
@ -18,7 +19,8 @@ namespace leveldb {
|
||||
//
|
||||
// Returns a non-OK result if fname does not name a leveldb storage
|
||||
// file, or if the file cannot be read.
|
||||
Status DumpFile(Env* env, const std::string& fname, WritableFile* dst);
|
||||
LEVELDB_EXPORT Status DumpFile(Env* env, const std::string& fname,
|
||||
WritableFile* dst);
|
||||
|
||||
} // namespace leveldb
|
||||
|
||||
|
||||
@ -13,10 +13,11 @@
|
||||
#ifndef STORAGE_LEVELDB_INCLUDE_ENV_H_
|
||||
#define STORAGE_LEVELDB_INCLUDE_ENV_H_
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
#include <stdarg.h>
|
||||
#include <stdint.h>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/status.h"
|
||||
|
||||
namespace leveldb {
|
||||
@ -28,7 +29,7 @@ class SequentialFile;
|
||||
class Slice;
|
||||
class WritableFile;
|
||||
|
||||
class Env {
|
||||
class LEVELDB_EXPORT Env {
|
||||
public:
|
||||
Env() { }
|
||||
virtual ~Env();
|
||||
@ -169,7 +170,7 @@ class Env {
|
||||
};
|
||||
|
||||
// A file abstraction for reading sequentially through a file
|
||||
class SequentialFile {
|
||||
class LEVELDB_EXPORT SequentialFile {
|
||||
public:
|
||||
SequentialFile() { }
|
||||
virtual ~SequentialFile();
|
||||
@ -200,7 +201,7 @@ class SequentialFile {
|
||||
};
|
||||
|
||||
// A file abstraction for randomly reading the contents of a file.
|
||||
class RandomAccessFile {
|
||||
class LEVELDB_EXPORT RandomAccessFile {
|
||||
public:
|
||||
RandomAccessFile() { }
|
||||
virtual ~RandomAccessFile();
|
||||
@ -226,7 +227,7 @@ class RandomAccessFile {
|
||||
// A file abstraction for sequential writing. The implementation
|
||||
// must provide buffering since callers may append small fragments
|
||||
// at a time to the file.
|
||||
class WritableFile {
|
||||
class LEVELDB_EXPORT WritableFile {
|
||||
public:
|
||||
WritableFile() { }
|
||||
virtual ~WritableFile();
|
||||
@ -243,7 +244,7 @@ class WritableFile {
|
||||
};
|
||||
|
||||
// An interface for writing log messages.
|
||||
class Logger {
|
||||
class LEVELDB_EXPORT Logger {
|
||||
public:
|
||||
Logger() { }
|
||||
virtual ~Logger();
|
||||
@ -259,7 +260,7 @@ class Logger {
|
||||
|
||||
|
||||
// Identifies a locked file.
|
||||
class FileLock {
|
||||
class LEVELDB_EXPORT FileLock {
|
||||
public:
|
||||
FileLock() { }
|
||||
virtual ~FileLock();
|
||||
@ -277,17 +278,17 @@ extern void Log(Logger* info_log, const char* format, ...)
|
||||
;
|
||||
|
||||
// A utility routine: write "data" to the named file.
|
||||
extern Status WriteStringToFile(Env* env, const Slice& data,
|
||||
LEVELDB_EXPORT Status WriteStringToFile(Env* env, const Slice& data,
|
||||
const std::string& fname);
|
||||
|
||||
// A utility routine: read contents of named file into *data
|
||||
extern Status ReadFileToString(Env* env, const std::string& fname,
|
||||
LEVELDB_EXPORT Status ReadFileToString(Env* env, const std::string& fname,
|
||||
std::string* data);
|
||||
|
||||
// An implementation of Env that forwards all calls to another Env.
|
||||
// May be useful to clients who wish to override just part of the
|
||||
// functionality of another Env.
|
||||
class EnvWrapper : public Env {
|
||||
class LEVELDB_EXPORT EnvWrapper : public Env {
|
||||
public:
|
||||
// Initialize an EnvWrapper that delegates all calls to *t
|
||||
explicit EnvWrapper(Env* t) : target_(t) { }
|
||||
|
||||
33
include/leveldb/export.h
Normal file
33
include/leveldb/export.h
Normal file
@ -0,0 +1,33 @@
|
||||
// Copyright (c) 2017 The LevelDB Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
||||
|
||||
#ifndef STORAGE_LEVELDB_INCLUDE_EXPORT_H_
|
||||
#define STORAGE_LEVELDB_INCLUDE_EXPORT_H_
|
||||
|
||||
#if !defined(LEVELDB_EXPORT)
|
||||
|
||||
#if defined(LEVELDB_SHARED_LIBRARY)
|
||||
#if defined(OS_WIN)
|
||||
|
||||
#if defined(LEVELDB_COMPILE_LIBRARY)
|
||||
#define LEVELDB_EXPORT __declspec(dllexport)
|
||||
#else
|
||||
#define LEVELDB_EXPORT __declspec(dllimport)
|
||||
#endif // defined(LEVELDB_COMPILE_LIBRARY)
|
||||
|
||||
#else // defined(OS_WIN)
|
||||
#if defined(LEVELDB_COMPILE_LIBRARY)
|
||||
#define LEVELDB_EXPORT __attribute__((visibility("default")))
|
||||
#else
|
||||
#define LEVELDB_EXPORT
|
||||
#endif
|
||||
#endif // defined(OS_WIN)
|
||||
|
||||
#else // defined(LEVELDB_SHARED_LIBRARY)
|
||||
#define LEVELDB_EXPORT
|
||||
#endif
|
||||
|
||||
#endif // !defined(LEVELDB_EXPORT)
|
||||
|
||||
#endif // STORAGE_LEVELDB_INCLUDE_EXPORT_H_
|
||||
@ -17,12 +17,13 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_
|
||||
|
||||
#include <string>
|
||||
#include "leveldb/export.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
class Slice;
|
||||
|
||||
class FilterPolicy {
|
||||
class LEVELDB_EXPORT FilterPolicy {
|
||||
public:
|
||||
virtual ~FilterPolicy();
|
||||
|
||||
@ -63,8 +64,7 @@ class FilterPolicy {
|
||||
// ignores trailing spaces, it would be incorrect to use a
|
||||
// FilterPolicy (like NewBloomFilterPolicy) that does not ignore
|
||||
// trailing spaces in keys.
|
||||
extern const FilterPolicy* NewBloomFilterPolicy(int bits_per_key);
|
||||
|
||||
LEVELDB_EXPORT const FilterPolicy* NewBloomFilterPolicy(int bits_per_key);
|
||||
}
|
||||
|
||||
#endif // STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_
|
||||
|
||||
@ -15,12 +15,13 @@
|
||||
#ifndef STORAGE_LEVELDB_INCLUDE_ITERATOR_H_
|
||||
#define STORAGE_LEVELDB_INCLUDE_ITERATOR_H_
|
||||
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/slice.h"
|
||||
#include "leveldb/status.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
class Iterator {
|
||||
class LEVELDB_EXPORT Iterator {
|
||||
public:
|
||||
Iterator();
|
||||
virtual ~Iterator();
|
||||
@ -90,10 +91,10 @@ class Iterator {
|
||||
};
|
||||
|
||||
// Return an empty iterator (yields nothing).
|
||||
extern Iterator* NewEmptyIterator();
|
||||
LEVELDB_EXPORT Iterator* NewEmptyIterator();
|
||||
|
||||
// Return an empty iterator with the specified status.
|
||||
extern Iterator* NewErrorIterator(const Status& status);
|
||||
LEVELDB_EXPORT Iterator* NewErrorIterator(const Status& status);
|
||||
|
||||
} // namespace leveldb
|
||||
|
||||
|
||||
@ -6,6 +6,7 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_OPTIONS_H_
|
||||
|
||||
#include <stddef.h>
|
||||
#include "leveldb/export.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
@ -28,7 +29,7 @@ enum CompressionType {
|
||||
};
|
||||
|
||||
// Options to control the behavior of a database (passed to DB::Open)
|
||||
struct Options {
|
||||
struct LEVELDB_EXPORT Options {
|
||||
// -------------------
|
||||
// Parameters that affect behavior
|
||||
|
||||
@ -158,7 +159,7 @@ struct Options {
|
||||
};
|
||||
|
||||
// Options that control read operations
|
||||
struct ReadOptions {
|
||||
struct LEVELDB_EXPORT ReadOptions {
|
||||
// If true, all data read from underlying storage will be
|
||||
// verified against corresponding checksums.
|
||||
// Default: false
|
||||
@ -184,7 +185,7 @@ struct ReadOptions {
|
||||
};
|
||||
|
||||
// Options that control write operations
|
||||
struct WriteOptions {
|
||||
struct LEVELDB_EXPORT WriteOptions {
|
||||
// If true, the write will be flushed from the operating system
|
||||
// buffer cache (by calling WritableFile::Sync()) before the write
|
||||
// is considered complete. If this flag is true, writes will be
|
||||
|
||||
@ -19,10 +19,11 @@
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
#include <string>
|
||||
#include "leveldb/export.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
class Slice {
|
||||
class LEVELDB_EXPORT Slice {
|
||||
public:
|
||||
// Create an empty slice.
|
||||
Slice() : data_(""), size_(0) { }
|
||||
|
||||
@ -14,11 +14,12 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_STATUS_H_
|
||||
|
||||
#include <string>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/slice.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
class Status {
|
||||
class LEVELDB_EXPORT Status {
|
||||
public:
|
||||
// Create a success status.
|
||||
Status() : state_(NULL) { }
|
||||
|
||||
@ -6,6 +6,7 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_TABLE_H_
|
||||
|
||||
#include <stdint.h>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/iterator.h"
|
||||
|
||||
namespace leveldb {
|
||||
@ -21,7 +22,7 @@ class TableCache;
|
||||
// A Table is a sorted map from strings to strings. Tables are
|
||||
// immutable and persistent. A Table may be safely accessed from
|
||||
// multiple threads without external synchronization.
|
||||
class Table {
|
||||
class LEVELDB_EXPORT Table {
|
||||
public:
|
||||
// Attempt to open the table that is stored in bytes [0..file_size)
|
||||
// of "file", and read the metadata entries necessary to allow
|
||||
|
||||
@ -14,6 +14,7 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_
|
||||
|
||||
#include <stdint.h>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/options.h"
|
||||
#include "leveldb/status.h"
|
||||
|
||||
@ -23,7 +24,7 @@ class BlockBuilder;
|
||||
class BlockHandle;
|
||||
class WritableFile;
|
||||
|
||||
class TableBuilder {
|
||||
class LEVELDB_EXPORT TableBuilder {
|
||||
public:
|
||||
// Create a builder that will store the contents of the table it is
|
||||
// building in *file. Does not close the file. It is up to the
|
||||
|
||||
@ -22,13 +22,14 @@
|
||||
#define STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_
|
||||
|
||||
#include <string>
|
||||
#include "leveldb/export.h"
|
||||
#include "leveldb/status.h"
|
||||
|
||||
namespace leveldb {
|
||||
|
||||
class Slice;
|
||||
|
||||
class WriteBatch {
|
||||
class LEVELDB_EXPORT WriteBatch {
|
||||
public:
|
||||
WriteBatch();
|
||||
~WriteBatch();
|
||||
|
||||
Loading…
Reference in New Issue
Block a user