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https://github.com/isar/libmdbx.git
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mdbx: enable solib profiling with -pg
and gprof
with GLIBC >= 2.37.
However such profiling requires https://sourceware.org/bugzilla/show_bug.cgi?id=29438 to be fixed.
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a44eb1accb
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@ -1459,7 +1459,8 @@ __cold void mdbx_rthc_global_init(void) {
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}
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bootid = mdbx_osal_bootid();
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#if 0 /* debug */
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#if 0 /* debug */
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for (unsigned i = 0; i < 65536; ++i) {
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size_t pages = pv2pages(i);
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unsigned x = pages2pv(pages);
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@ -1469,7 +1470,7 @@ __cold void mdbx_rthc_global_init(void) {
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assert(pages == xp);
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}
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fflush(stdout);
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#endif
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#endif /* #if 0 */
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}
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/* dtor called for thread, i.e. for all mdbx's environment objects */
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@ -1547,6 +1548,7 @@ __cold void mdbx_rthc_thread_dtor(void *rthc) {
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#endif
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}
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MDBX_EXCLUDE_FOR_GPROF
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__cold void mdbx_rthc_global_dtor(void) {
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mdbx_trace(">> pid %d", mdbx_getpid());
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@ -23877,6 +23879,9 @@ __dll_export
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#endif /* MDBX_BUILD_TYPE */
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,
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"MDBX_DEBUG=" MDBX_STRINGIFY(MDBX_DEBUG)
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#ifdef ENABLE_GPROF
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" ENABLE_GPROF"
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#endif /* ENABLE_GPROF */
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" MDBX_WORDBITS=" MDBX_STRINGIFY(MDBX_WORDBITS)
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" BYTE_ORDER="
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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@ -195,6 +195,16 @@
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#endif
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#endif /* -Walignment-reduction-ignored */
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#ifndef MDBX_EXCLUDE_FOR_GPROF
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#ifdef ENABLE_GPROF
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#define MDBX_EXCLUDE_FOR_GPROF \
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__attribute__((__no_instrument_function__, \
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__no_profile_instrument_function__))
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#else
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#define MDBX_EXCLUDE_FOR_GPROF
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#endif /* ENABLE_GPROF */
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#endif /* MDBX_EXCLUDE_FOR_GPROF */
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#ifdef __cplusplus
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extern "C" {
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#endif
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@ -32,6 +32,7 @@ uint32_t mdbx_linux_kernel_version;
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bool mdbx_RunningOnWSL1;
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#endif /* xMDBX_ALLOY */
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MDBX_EXCLUDE_FOR_GPROF
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__cold static uint8_t probe_for_WSL(const char *tag) {
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const char *const WSL = strstr(tag, "WSL");
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if (WSL && WSL[3] >= '2' && WSL[3] <= '9')
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@ -48,8 +49,22 @@ __cold static uint8_t probe_for_WSL(const char *tag) {
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#endif /* Linux */
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#ifdef ENABLE_GPROF
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extern void _mcleanup(void);
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extern void monstartup(unsigned long, unsigned long);
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extern void _init(void);
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extern void _fini(void);
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extern void __gmon_start__(void) __attribute__((__weak__));
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#endif /* ENABLE_GPROF */
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MDBX_EXCLUDE_FOR_GPROF
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__cold static __attribute__((__constructor__)) void
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mdbx_global_constructor(void) {
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#ifdef ENABLE_GPROF
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if (!&__gmon_start__)
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monstartup((uintptr_t)&_init, (uintptr_t)&_fini);
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#endif /* ENABLE_GPROF */
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#if defined(__linux__) || defined(__gnu_linux__)
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struct utsname buffer;
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if (uname(&buffer) == 0) {
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@ -84,9 +99,14 @@ mdbx_global_constructor(void) {
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mdbx_rthc_global_init();
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}
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MDBX_EXCLUDE_FOR_GPROF
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__cold static __attribute__((__destructor__)) void
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mdbx_global_destructor(void) {
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mdbx_rthc_global_dtor();
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#ifdef ENABLE_GPROF
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if (!&__gmon_start__)
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_mcleanup();
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#endif /* ENABLE_GPROF */
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}
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/*----------------------------------------------------------------------------*/
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