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04d599c718
This uses a simplified form of collection without writing to capture files directly. The data is written into a ring buffer for Sysprof to pick up and copy into the real destination file. Using the mmap() ring buffer allows loss of data when Sysprof cannot keep up, but on the other hand allows the inferior to be fast enough to be useful.
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/*
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If G_HAS_CONSTRUCTORS is true then the compiler support *both* constructors and
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destructors, in a sane way, including e.g. on library unload. If not you're on
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your own.
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Some compilers need #pragma to handle this, which does not work with macros,
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so the way you need to use this is (for constructors):
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#ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA
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#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(my_constructor)
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#endif
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G_DEFINE_CONSTRUCTOR(my_constructor)
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static void my_constructor(void) {
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...
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}
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*/
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#ifndef __GTK_DOC_IGNORE__
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
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#define G_HAS_CONSTRUCTORS 1
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#define G_DEFINE_CONSTRUCTOR(_func) static void __attribute__((constructor)) _func (void);
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#define G_DEFINE_DESTRUCTOR(_func) static void __attribute__((destructor)) _func (void);
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#elif defined (_MSC_VER) && (_MSC_VER >= 1500)
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/* Visual studio 2008 and later has _Pragma */
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#define G_HAS_CONSTRUCTORS 1
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#define G_DEFINE_CONSTRUCTOR(_func) \
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static void _func(void); \
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static int _func ## _wrapper(void) { _func(); return 0; } \
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__pragma(section(".CRT$XCU",read)) \
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__declspec(allocate(".CRT$XCU")) static int (* _array ## _func)(void) = _func ## _wrapper;
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#define G_DEFINE_DESTRUCTOR(_func) \
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static void _func(void); \
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static int _func ## _constructor(void) { atexit (_func); return 0; } \
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__pragma(section(".CRT$XCU",read)) \
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__declspec(allocate(".CRT$XCU")) static int (* _array ## _func)(void) = _func ## _constructor;
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#elif defined (_MSC_VER)
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#define G_HAS_CONSTRUCTORS 1
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/* Pre Visual studio 2008 must use #pragma section */
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#define G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA 1
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#define G_DEFINE_DESTRUCTOR_NEEDS_PRAGMA 1
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#define G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(_func) \
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section(".CRT$XCU",read)
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#define G_DEFINE_CONSTRUCTOR(_func) \
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static void _func(void); \
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static int _func ## _wrapper(void) { _func(); return 0; } \
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__declspec(allocate(".CRT$XCU")) static int (*p)(void) = _func ## _wrapper;
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#define G_DEFINE_DESTRUCTOR_PRAGMA_ARGS(_func) \
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section(".CRT$XCU",read)
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#define G_DEFINE_DESTRUCTOR(_func) \
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static void _func(void); \
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static int _func ## _constructor(void) { atexit (_func); return 0; } \
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__declspec(allocate(".CRT$XCU")) static int (* _array ## _func)(void) = _func ## _constructor;
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#elif defined(__SUNPRO_C)
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/* This is not tested, but i believe it should work, based on:
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* http://opensource.apple.com/source/OpenSSL098/OpenSSL098-35/src/fips/fips_premain.c
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*/
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#define G_HAS_CONSTRUCTORS 1
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#define G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA 1
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#define G_DEFINE_DESTRUCTOR_NEEDS_PRAGMA 1
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#define G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(_func) \
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init(_func)
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#define G_DEFINE_CONSTRUCTOR(_func) \
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static void _func(void);
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#define G_DEFINE_DESTRUCTOR_PRAGMA_ARGS(_func) \
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fini(_func)
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#define G_DEFINE_DESTRUCTOR(_func) \
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static void _func(void);
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#else
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/* constructors not supported for this compiler */
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#endif
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#endif /* __GTK_DOC_IGNORE__ */
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