mirror of
https://github.com/microsoft/mimalloc.git
synced 2024-12-28 05:50:51 +08:00
Merge branch 'dev' into dev-win
This commit is contained in:
daan
commit
4e855988b4
@ -263,17 +263,15 @@ mi_decl_export mi_decl_allocator void* mi_reallocarray(void* p, size_t count, si
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mi_decl_export void mi_free_size(void* p, size_t size) mi_attr_noexcept;
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mi_decl_export void mi_free_size_aligned(void* p, size_t size, size_t alignment) mi_attr_noexcept;
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mi_decl_export void mi_free_aligned(void* p, size_t alignment) mi_attr_noexcept;
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mi_decl_export void* mi_new(size_t n) mi_attr_malloc mi_attr_alloc_size(1);
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mi_decl_export void* mi_new_aligned(size_t n, size_t alignment) mi_attr_malloc mi_attr_alloc_size(1);
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mi_decl_export void* mi_new_nothrow(size_t n) mi_attr_malloc mi_attr_alloc_size(1);
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mi_decl_export void* mi_new_aligned_nothrow(size_t n, size_t alignment) mi_attr_malloc mi_attr_alloc_size(1);
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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#include <cstddef>
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mi_decl_export void* mi_new(std::size_t n) noexcept(false) mi_attr_malloc mi_attr_alloc_size(1);
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#if (__cplusplus > 201402L || defined(__cpp_aligned_new))
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#include <new>
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mi_decl_export void* mi_new_aligned(std::size_t n, std::align_val_t alignment) noexcept(false) mi_attr_malloc mi_attr_alloc_size(1);
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#endif
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#endif
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#endif
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@ -98,14 +98,18 @@ static int __cdecl mi_setmaxstdio(int newmax);
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// Microsoft allocation extensions
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// ------------------------------------------------------
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#define UNUSED(x) (void)(x) // suppress unused variable warnings
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static void* mi__expand(void* p, size_t newsize) {
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void* res = mi_expand(p, newsize);
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if (res == NULL) errno = ENOMEM;
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return res;
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}
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typedef size_t mi_nothrow_t;
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static void mi_free_nothrow(void* p, mi_nothrow_t tag) {
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UNUSED(tag);
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mi_free(p);
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}
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// Versions of `free`, `realloc`, `recalloc`, `expand` and `msize`
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// that are used during termination and are no-ops.
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@ -113,6 +117,16 @@ static void mi_free_term(void* p) {
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UNUSED(p);
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}
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static void mi_free_size_term(void* p, size_t size) {
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UNUSED(size);
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UNUSED(p);
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}
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static void mi_free_nothrow_term(void* p, mi_nothrow_t tag) {
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UNUSED(tag);
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UNUSED(p);
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}
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static void* mi_realloc_term(void* p, size_t newsize) {
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UNUSED(p); UNUSED(newsize);
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return NULL;
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@ -444,24 +458,32 @@ static mi_patch_t patches[] = {
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// override new/delete variants for efficiency (?)
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#ifdef _WIN64
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// 64 bit new/delete
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MI_PATCH_NAME2("??2@YAPEAX_K@Z", mi_malloc),
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MI_PATCH_NAME2("??_U@YAPEAX_K@Z", mi_malloc),
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MI_PATCH_NAME3("??3@YAXPEAX@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??_V@YAXPEAX@Z", mi_free, mi_free_term),
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MI_PATCH_NAME2("??2@YAPEAX_KAEBUnothrow_t@std@@@Z", mi_malloc),
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MI_PATCH_NAME2("??_U@YAPEAX_KAEBUnothrow_t@std@@@Z", mi_malloc),
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MI_PATCH_NAME3("??3@YAXPEAXAEBUnothrow_t@std@@@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??_V@YAXPEAXAEBUnothrow_t@std@@@Z", mi_free, mi_free_term),
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MI_PATCH_NAME2("??2@YAPEAX_K@Z", mi_new),
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MI_PATCH_NAME2("??_U@YAPEAX_K@Z", mi_new),
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MI_PATCH_NAME3("??3@YAXPEAX@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??_V@YAXPEAX@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??3@YAXPEAX_K@Z", mi_free_size, mi_free_size_term), // delete sized
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MI_PATCH_NAME3("??_V@YAXPEAX_K@Z", mi_free_size, mi_free_size_term), // delete sized
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MI_PATCH_NAME2("??2@YAPEAX_KAEBUnothrow_t@std@@@Z", mi_new),
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MI_PATCH_NAME2("??_U@YAPEAX_KAEBUnothrow_t@std@@@Z", mi_new),
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MI_PATCH_NAME3("??3@YAXPEAXAEBUnothrow_t@std@@@Z", mi_free_nothrow, mi_free_nothrow_term),
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MI_PATCH_NAME3("??_V@YAXPEAXAEBUnothrow_t@std@@@Z", mi_free_nothrow, mi_free_nothrow_term),
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#else
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// 32 bit new/delete
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MI_PATCH_NAME2("??2@YAPAXI@Z", mi_malloc),
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MI_PATCH_NAME2("??_U@YAPAXI@Z", mi_malloc),
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MI_PATCH_NAME2("??2@YAPAXI@Z", mi_new),
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MI_PATCH_NAME2("??_U@YAPAXI@Z", mi_new),
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MI_PATCH_NAME3("??3@YAXPAX@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??_V@YAXPAX@Z", mi_free, mi_free_term),
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MI_PATCH_NAME2("??2@YAPAXIABUnothrow_t@std@@@Z", mi_malloc),
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MI_PATCH_NAME2("??_U@YAPAXIABUnothrow_t@std@@@Z", mi_malloc),
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MI_PATCH_NAME3("??3@YAXPAXABUnothrow_t@std@@@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??_V@YAXPAXABUnothrow_t@std@@@Z", mi_free, mi_free_term),
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MI_PATCH_NAME3("??3@YAXPAXI@Z", mi_free_size, mi_free_size_term), // delete sized
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MI_PATCH_NAME3("??_V@YAXPAXI@Z", mi_free_size, mi_free_size_term), // delete sized
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MI_PATCH_NAME2("??2@YAPAXIABUnothrow_t@std@@@Z", mi_new),
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MI_PATCH_NAME2("??_U@YAPAXIABUnothrow_t@std@@@Z", mi_new),
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MI_PATCH_NAME3("??3@YAXPAXABUnothrow_t@std@@@Z", mi_free_nothrow, mi_free_nothrow_term),
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MI_PATCH_NAME3("??_V@YAXPAXABUnothrow_t@std@@@Z", mi_free_nothrow, mi_free_nothrow_term),
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#endif
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#endif
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{ NULL, NULL, NULL, PATCH_NONE, {NULL,NULL,NULL,NULL} }
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@ -88,60 +88,66 @@ terms of the MIT license. A copy of the license can be found in the file
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void operator delete(void* p) noexcept MI_FORWARD0(mi_free,p);
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void operator delete[](void* p) noexcept MI_FORWARD0(mi_free,p);
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void* operator new(std::size_t n) noexcept(false) { return mi_new(n); }
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void* operator new[](std::size_t n) noexcept(false) { return mi_new(n); }
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void* operator new(std::size_t n) noexcept(false) MI_FORWARD1(mi_new,n);
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void* operator new[](std::size_t n) noexcept(false) MI_FORWARD1(mi_new,n);
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void* operator new (std::size_t n, const std::nothrow_t& tag) noexcept MI_FORWARD1(mi_malloc, n);
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void* operator new[](std::size_t n, const std::nothrow_t& tag) noexcept MI_FORWARD1(mi_malloc, n);
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void* operator new (std::size_t n, const std::nothrow_t& tag) noexcept { UNUSED(tag); return mi_new_nothrow(n); }
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void* operator new[](std::size_t n, const std::nothrow_t& tag) noexcept { UNUSED(tag); return mi_new_nothrow(n); }
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#if (__cplusplus >= 201402L)
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void operator delete (void* p, std::size_t sz) MI_FORWARD02(mi_free_size,p,sz);
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void operator delete[](void* p, std::size_t sz) MI_FORWARD02(mi_free_size,p,sz);
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void operator delete (void* p, std::size_t n) MI_FORWARD02(mi_free_size,p,n);
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void operator delete[](void* p, std::size_t n) MI_FORWARD02(mi_free_size,p,n);
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#endif
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#if (__cplusplus > 201402L || defined(__cpp_aligned_new))
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void operator delete (void* p, std::align_val_t al) noexcept { mi_free_aligned(p, static_cast<size_t>(al)); }
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void operator delete[](void* p, std::align_val_t al) noexcept { mi_free_aligned(p, static_cast<size_t>(al)); }
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void operator delete (void* p, std::size_t sz, std::align_val_t al) noexcept { mi_free_size_aligned(p, sz, static_cast<size_t>(al)); };
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void operator delete[](void* p, std::size_t sz, std::align_val_t al) noexcept { mi_free_size_aligned(p, sz, static_cast<size_t>(al)); };
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void operator delete (void* p, std::size_t n, std::align_val_t al) noexcept { mi_free_size_aligned(p, n, static_cast<size_t>(al)); };
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void operator delete[](void* p, std::size_t n, std::align_val_t al) noexcept { mi_free_size_aligned(p, n, static_cast<size_t>(al)); };
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void* operator new( std::size_t n, std::align_val_t al) noexcept(false) { return mi_new_aligned(n,al); }
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void* operator new[]( std::size_t n, std::align_val_t al) noexcept(false) { return mi_new_aligned(n,al); }
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void* operator new (std::size_t n, std::align_val_t al, const std::nothrow_t&) noexcept { return mi_malloc_aligned(n, static_cast<size_t>(al)); }
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void* operator new[](std::size_t n, std::align_val_t al, const std::nothrow_t&) noexcept { return mi_malloc_aligned(n, static_cast<size_t>(al)); }
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void* operator new( std::size_t n, std::align_val_t al) noexcept(false) { return mi_new_aligned(n, static_cast<size_t>(al)); }
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void* operator new[]( std::size_t n, std::align_val_t al) noexcept(false) { return mi_new_aligned(n, static_cast<size_t>(al)); }
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void* operator new (std::size_t n, std::align_val_t al, const std::nothrow_t&) noexcept { return mi_new_aligned_nothrow(n, static_cast<size_t>(al)); }
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void* operator new[](std::size_t n, std::align_val_t al, const std::nothrow_t&) noexcept { return mi_new_aligned_nothrow(n, static_cast<size_t>(al)); }
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#endif
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#else
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// ------------------------------------------------------
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// With a C compiler we cannot override the new/delete operators
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// as the standard requires calling into `get_new_handler` and/or
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// throwing C++ exceptions (and we cannot do that from C). So, we
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// hope the standard new uses `malloc` internally which will be
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// redirected anyways.
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// ------------------------------------------------------
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#if 0
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#elif (defined(__GNUC__) || defined(__clang__))
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// ------------------------------------------------------
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// Override by defining the mangled C++ names of the operators (as
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// used by GCC and CLang).
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// See <https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling>
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// ------------------------------------------------------
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void _ZdlPv(void* p) MI_FORWARD0(mi_free,p); // delete
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void _ZdaPv(void* p) MI_FORWARD0(mi_free,p); // delete[]
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void _ZdlPv(void* p) MI_FORWARD0(mi_free,p); // delete
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void _ZdaPv(void* p) MI_FORWARD0(mi_free,p); // delete[]
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void _ZdlPvm(void* p, size_t n) MI_FORWARD02(mi_free_size,p,n);
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void _ZdaPvm(void* p, size_t n) MI_FORWARD02(mi_free_size,p,n);
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void _ZdlPvSt11align_val_t(void* p, size_t al) { mi_free_aligned(p,al); }
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void _ZdaPvSt11align_val_t(void* p, size_t al) { mi_free_aligned(p,al); }
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void _ZdlPvmSt11align_val_t(void* p, size_t n, size_t al) { mi_free_size_aligned(p,n,al); }
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void _ZdaPvmSt11align_val_t(void* p, size_t n, size_t al) { mi_free_size_aligned(p,n,al); }
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typedef struct mi_nothrow_s { } mi_nothrow_t;
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#if (MI_INTPTR_SIZE==8)
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void* _Znwm(uint64_t n) MI_FORWARD1(mi_malloc,n); // new 64-bit
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void* _Znam(uint64_t n) MI_FORWARD1(mi_malloc,n); // new[] 64-bit
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void* _Znwmm(uint64_t n, uint64_t align) { return mi_malloc_aligned(n,align); } // aligned new 64-bit
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void* _Znamm(uint64_t n, uint64_t align) { return mi_malloc_aligned(n,align); } // aligned new[] 64-bit
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void* _Znwm(size_t n) MI_FORWARD1(mi_new,n); // new 64-bit
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void* _Znam(size_t n) MI_FORWARD1(mi_new,n); // new[] 64-bit
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void* _ZnwmSt11align_val_t(size_t n, size_t al) MI_FORWARD2(mi_new_aligned, n, al);
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void* _ZnamSt11align_val_t(size_t n, size_t al) MI_FORWARD2(mi_new_aligned, n, al);
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void* _ZnwmRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { UNUSED(tag); return mi_new_nothrow(n); }
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void* _ZnamRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { UNUSED(tag); return mi_new_nothrow(n); }
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void* _ZnwmSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
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void* _ZnamSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
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#elif (MI_INTPTR_SIZE==4)
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void* _Znwj(uint32_t n) MI_FORWARD1(mi_malloc,n); // new 32-bit
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void* _Znaj(uint32_t n) MI_FORWARD1(mi_malloc,n); // new[] 32-bit
|
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void* _Znwjj(uint32_t n, uint32_t align) { return mi_malloc_aligned(n,align); } // aligned new 32-bit
|
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void* _Znajj(uint32_t n, uint32_t align) { return mi_malloc_aligned(n,align); } // aligned new[] 32-bit
|
||||
void* _Znwj(size_t n) MI_FORWARD1(mi_new,n); // new 64-bit
|
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void* _Znaj(size_t n) MI_FORWARD1(mi_new,n); // new[] 64-bit
|
||||
void* _ZnwjSt11align_val_t(size_t n, size_t al) MI_FORWARD2(mi_new_aligned, n, al);
|
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void* _ZnajSt11align_val_t(size_t n, size_t al) MI_FORWARD2(mi_new_aligned, n, al);
|
||||
void* _ZnwjRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { UNUSED(tag); return mi_new_nothrow(n); }
|
||||
void* _ZnajRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { UNUSED(tag); return mi_new_nothrow(n); }
|
||||
void* _ZnwjSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
|
||||
void* _ZnajSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
|
||||
#else
|
||||
#error "define overloads for new/delete for this platform (just for performance, can be skipped)"
|
||||
#endif
|
||||
#endif
|
||||
#endif // __cplusplus
|
||||
|
||||
|
||||
|
||||
117
src/alloc.c
117
src/alloc.c
@ -256,8 +256,8 @@ bool _mi_free_delayed_block(mi_block_t* block) {
|
||||
mi_assert_internal(_mi_thread_id() == segment->thread_id);
|
||||
mi_page_t* page = _mi_segment_page_of(segment, block);
|
||||
if (mi_tf_delayed(page->thread_free) == MI_DELAYED_FREEING) {
|
||||
// we might already start delayed freeing while another thread has not yet
|
||||
// reset the delayed_freeing flag; in that case don't free it quite yet if
|
||||
// we might already start delayed freeing while another thread has not yet
|
||||
// reset the delayed_freeing flag; in that case don't free it quite yet if
|
||||
// this is the last block remaining.
|
||||
if (page->used - page->thread_freed == 1) return false;
|
||||
}
|
||||
@ -282,9 +282,6 @@ size_t mi_usable_size(const void* p) mi_attr_noexcept {
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
// ------------------------------------------------------
|
||||
// ensure explicit external inline definitions are emitted!
|
||||
// ------------------------------------------------------
|
||||
@ -298,8 +295,6 @@ void* _mi_externs[] = {
|
||||
(void*)&mi_heap_zalloc,
|
||||
(void*)&mi_heap_malloc_small
|
||||
};
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
@ -360,7 +355,7 @@ void* _mi_heap_realloc_zero(mi_heap_t* heap, void* p, size_t newsize, bool zero)
|
||||
if (newsize <= size && newsize >= (size / 2)) {
|
||||
return p; // reallocation still fits and not more than 50% waste
|
||||
}
|
||||
void* newp = mi_heap_malloc(heap,newsize);
|
||||
void* newp = mi_heap_malloc(heap,newsize);
|
||||
if (mi_likely(newp != NULL)) {
|
||||
if (zero && newsize > size) {
|
||||
// also set last word in the previous allocation to zero to ensure any padding is zero-initialized
|
||||
@ -410,6 +405,10 @@ void* mi_reallocf(void* p, size_t newsize) mi_attr_noexcept {
|
||||
return mi_heap_reallocf(mi_get_default_heap(),p,newsize);
|
||||
}
|
||||
|
||||
// ------------------------------------------------------
|
||||
// strdup, strndup, and realpath
|
||||
// ------------------------------------------------------
|
||||
|
||||
// `strdup` using mi_malloc
|
||||
char* mi_heap_strdup(mi_heap_t* heap, const char* s) mi_attr_noexcept {
|
||||
if (s == NULL) return NULL;
|
||||
@ -496,41 +495,91 @@ char* mi_realpath(const char* fname, char* resolved_name) mi_attr_noexcept {
|
||||
return mi_heap_realpath(mi_get_default_heap(),fname,resolved_name);
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------
|
||||
C++ new and new_aligned
|
||||
The standard requires calling into `get_new_handler` and
|
||||
throwing the bad_alloc exception on failure. If we compile
|
||||
with a C++ compiler we can implement this precisely. If we
|
||||
use a C compiler we cannot throw a `bad_alloc` exception
|
||||
but we call `exit` instead (i.e. not returning).
|
||||
-------------------------------------------------------*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#include <new>
|
||||
|
||||
static mi_decl_noinline void* mi_new_try(std::size_t n) noexcept(false) {
|
||||
void* p;
|
||||
do {
|
||||
std::new_handler h = std::get_new_handler();
|
||||
if (h==NULL) throw std::bad_alloc();
|
||||
static bool mi_try_new_handler(bool nothrow) {
|
||||
std::new_handler h = std::get_new_handler();
|
||||
if (h==NULL) {
|
||||
if (!nothrow) throw std::bad_alloc();
|
||||
return false;
|
||||
}
|
||||
else {
|
||||
h();
|
||||
// and try again
|
||||
return true;
|
||||
}
|
||||
}
|
||||
#else
|
||||
#include <errno.h>
|
||||
#ifndef ENOMEM
|
||||
#define ENOMEM 12
|
||||
#endif
|
||||
typedef void (*std_new_handler_t)();
|
||||
|
||||
#if (defined(__GNUC__) || defined(__clang__))
|
||||
std_new_handler_t __attribute((weak)) _ZSt15get_new_handlerv() {
|
||||
return NULL;
|
||||
}
|
||||
std_new_handler_t mi_get_new_handler() {
|
||||
return _ZSt15get_new_handlerv();
|
||||
}
|
||||
#else
|
||||
std_new_handler_t mi_get_new_handler() {
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
static bool mi_try_new_handler(bool nothrow) {
|
||||
std_new_handler_t h = mi_get_new_handler();
|
||||
if (h==NULL) {
|
||||
if (!nothrow) exit(ENOMEM);
|
||||
return false;
|
||||
}
|
||||
else {
|
||||
h();
|
||||
return true;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
static mi_decl_noinline void* mi_try_new(size_t n, bool nothrow ) {
|
||||
void* p = NULL;
|
||||
while(p == NULL && mi_try_new_handler(nothrow)) {
|
||||
p = mi_malloc(n);
|
||||
} while (p==NULL);
|
||||
}
|
||||
return p;
|
||||
}
|
||||
|
||||
// spit out `new_try` for better assembly code
|
||||
void* mi_new(std::size_t n) noexcept(false) {
|
||||
void* mi_new(size_t n) {
|
||||
void* p = mi_malloc(n);
|
||||
if (mi_likely(p != NULL)) return p;
|
||||
else return mi_new_try(n);
|
||||
}
|
||||
|
||||
#if (__cplusplus > 201402L || defined(__cpp_aligned_new))
|
||||
// for aligned allocation its fine as it is not inlined anyways
|
||||
void* mi_new_aligned(std::size_t n, std::align_val_t alignment) noexcept(false) {
|
||||
void* p;
|
||||
while ((p = mi_malloc_aligned(n,static_cast<size_t>(alignment))) == NULL) {
|
||||
std::new_handler h = std::get_new_handler();
|
||||
if (h==NULL) throw std::bad_alloc();
|
||||
h();
|
||||
// and try again
|
||||
};
|
||||
if (mi_unlikely(p == NULL)) return mi_try_new(n,false);
|
||||
return p;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
void* mi_new_aligned(size_t n, size_t alignment) {
|
||||
void* p;
|
||||
do { p = mi_malloc_aligned(n, alignment); }
|
||||
while(p == NULL && mi_try_new_handler(false));
|
||||
return p;
|
||||
}
|
||||
|
||||
void* mi_new_nothrow(size_t n) {
|
||||
void* p = mi_malloc(n);
|
||||
if (mi_unlikely(p == NULL)) return mi_try_new(n,true);
|
||||
return p;
|
||||
}
|
||||
|
||||
void* mi_new_aligned_nothrow(size_t n, size_t alignment) {
|
||||
void* p;
|
||||
do { p = mi_malloc_aligned(n, alignment); }
|
||||
while (p == NULL && mi_try_new_handler(true));
|
||||
return p;
|
||||
}
|
||||
|
||||
@ -5,6 +5,8 @@
|
||||
|
||||
#include <mimalloc.h>
|
||||
|
||||
#include <new>
|
||||
|
||||
static void* p = malloc(8);
|
||||
|
||||
void free_p() {
|
||||
@ -36,6 +38,8 @@ int main() {
|
||||
free(s);
|
||||
Test* t = new Test(42);
|
||||
delete t;
|
||||
t = new (std::nothrow) Test(42);
|
||||
delete t;
|
||||
int err = mi_posix_memalign(&p1,32,60);
|
||||
if (!err) free(p1);
|
||||
free(p);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user