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Merge pull request #2675 from bluca/sunos_sigbus

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Problem SIGBUS under 64-bit SunOS Sparc
This commit is contained in:
Constantin Rack 2017-08-11 20:01:05 +02:00 committed by GitHub
commit 6abeb7ec2f
2 changed files with 22 additions and 2 deletions
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22
src/atomic_counter.hpp
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@ -36,7 +36,7 @@
#define ZMQ_ATOMIC_COUNTER_MUTEX
#elif defined ZMQ_HAVE_ATOMIC_INTRINSICS
#define ZMQ_ATOMIC_COUNTER_INTRINSIC
#elif (defined ZMQ_CXX11 && defined __cplusplus && __cplusplus >= 201103L)
#elif (defined __cplusplus && __cplusplus >= 201103L)
#define ZMQ_ATOMIC_COUNTER_CXX11
#elif (defined __i386__ || defined __x86_64__) && defined __GNUC__
#define ZMQ_ATOMIC_COUNTER_X86
@ -69,8 +69,22 @@ namespace zmq
// This class represents an integer that can be incremented/decremented
// in atomic fashion.
//
// In zmq::shared_message_memory_allocator a buffer with an atomic_counter_t
// at the start is allocated. If the class does not align to pointer size,
// access to pointers in structures in the buffer will cause SIGBUS on
// architectures that do not allow mis-aligned pointers (eg: SPARC).
// Force the compiler to align to pointer size, which will cause the object
// to grow from 4 bytes to 8 bytes on 64 bit architectures (when not using
// mutexes).
#if defined (_MSC_VER) && (defined (_M_X64) || defined (_M_ARM64))
class __declspec (align (8)) atomic_counter_t
#elif defined (_MSC_VER) && (defined (_M_IX86) || defined (_M_ARM_ARMV7VE))
class __declspec (align (4)) atomic_counter_t
#else
class atomic_counter_t
#endif
{
public:
@ -212,7 +226,13 @@ namespace zmq
atomic_counter_t (const atomic_counter_t&);
const atomic_counter_t& operator = (const atomic_counter_t&);
#endif
#if defined (__GNUC__) || defined ( __INTEL_COMPILER) || \
(defined (__SUNPRO_C) && __SUNPRO_C >= 0x590) || \
(defined (__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
} __attribute__ ((aligned (sizeof (void *))));
#else
};
#endif
}

2
src/atomic_ptr.hpp
View File

@ -34,7 +34,7 @@
#define ZMQ_ATOMIC_PTR_MUTEX
#elif defined ZMQ_HAVE_ATOMIC_INTRINSICS
#define ZMQ_ATOMIC_PTR_INTRINSIC
#elif (defined ZMQ_CXX11 && defined __cplusplus && __cplusplus >= 201103L)
#elif (defined __cplusplus && __cplusplus >= 201103L)
#define ZMQ_ATOMIC_PTR_CXX11
#elif (defined __i386__ || defined __x86_64__) && defined __GNUC__
#define ZMQ_ATOMIC_PTR_X86