diff options
Diffstat (limited to 'erts/lib_src/pthread/ethread.c')
| -rw-r--r-- | erts/lib_src/pthread/ethread.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/erts/lib_src/pthread/ethread.c b/erts/lib_src/pthread/ethread.c index 79784c5b84..42d2abd3f1 100644 --- a/erts/lib_src/pthread/ethread.c +++ b/erts/lib_src/pthread/ethread.c @@ -49,6 +49,8 @@ #define ETHREAD_IMPL__ #include "ethread.h" +#undef ETHR_INCLUDE_MONOTONIC_CLOCK__ +#define ETHR_INCLUDE_MONOTONIC_CLOCK__ #include "ethr_internal.h" #ifndef ETHR_HAVE_ETHREAD_DEFINES @@ -232,6 +234,10 @@ ethr_x86_cpuid__(int *eax, int *ebx, int *ecx, int *edx) #endif /* ETHR_X86_RUNTIME_CONF__ */ +#ifdef ETHR_HAVE_ETHR_GET_MONOTONIC_TIME +static void init_get_monotonic_time(void); +#endif + /* * -------------------------------------------------------------------------- * Exported functions @@ -254,6 +260,10 @@ ethr_init(ethr_init_data *id) goto error; #endif +#ifdef ETHR_HAVE_ETHR_GET_MONOTONIC_TIME + init_get_monotonic_time(); +#endif + res = ethr_init_common__(id); if (res != 0) goto error; @@ -567,6 +577,144 @@ int ethr_sigwait(const sigset_t *set, int *sig) #endif /* #if ETHR_HAVE_ETHR_SIG_FUNCS */ +#ifdef ETHR_HAVE_ETHR_GET_MONOTONIC_TIME + +static int broken_get_monotonic_time; + +#if defined(ETHR_HAVE_CLOCK_GETTIME_MONOTONIC) +# ifndef ETHR_MONOTONIC_CLOCK_ID +# error ETHR_MONOTONIC_CLOCK_ID should have been defined +# endif + +ethr_sint64_t +ethr_get_monotonic_time(void) +{ + ethr_sint64_t time; + struct timespec ts; + + if (broken_get_monotonic_time) + return (ethr_sint64_t) 0; + + if (0 != clock_gettime(ETHR_MONOTONIC_CLOCK_ID, &ts)) + ETHR_FATAL_ERROR__(errno); + + time = (ethr_sint64_t) ts.tv_sec; + time *= (ethr_sint64_t) 1000*1000*1000; + time += (ethr_sint64_t) ts.tv_nsec; + return time; +} + +#elif defined(ETHR_HAVE_MACH_CLOCK_GET_TIME) +# ifndef ETHR_MONOTONIC_CLOCK_ID +# error ETHR_MONOTONIC_CLOCK_ID should have been defined +# endif + +ethr_sint64_t +ethr_get_monotonic_time(void) +{ + ethr_sint64_t time; + kern_return_t res; + clock_serv_t clk_srv; + mach_timespec_t time_spec; + + if (broken_get_monotonic_time) + return (ethr_sint64_t) 0; + + errno = EFAULT; + host_get_clock_service(mach_host_self(), + ETHR_MONOTONIC_CLOCK_ID, + &clk_srv); + res = clock_get_time(clk_srv, &time_spec); + if (res != KERN_SUCCESS) + ETHR_FATAL_ERROR__(errno); + mach_port_deallocate(mach_task_self(), clk_srv); + + time = (ethr_sint64_t) time_spec.tv_sec; + time *= (ethr_sint64_t) 1000*1000*1000; + time += (ethr_sint64_t) time_spec.tv_nsec; + return time; +} + +#elif defined(ETHR_HAVE_GETHRTIME) + +ethr_sint64_t +ethr_get_monotonic_time(void) +{ + if (broken_get_monotonic_time) + return (ethr_sint64_t) 0; + return (ethr_sint64_t) gethrtime(); +} + +#else +#error missing monotonic clock +#endif + +int +ethr_get_monotonic_time_is_broken(void) +{ + return broken_get_monotonic_time; +} + +#include <string.h> +#include <ctype.h> +#include <sys/utsname.h> + +static void +init_get_monotonic_time(void) +{ + struct utsname uts; + int vsn[3]; + int i; + char *c; + + broken_get_monotonic_time = 0; + + (void) uname(&uts); + + for (c = uts.sysname; *c; c++) { + if (isupper((int) *c)) + *c = tolower((int) *c); + } + + c = uts.release; + for (i = 0; i < sizeof(vsn)/sizeof(int); i++) { + if (!isdigit((int) *c)) + vsn[i] = 0; + else { + char *c2 = c; + do { + c2++; + } while (isdigit((int) *c2)); + *c2 = '\0'; + vsn[i] = atoi(c); + c = c2; + c++; + } + } + + if (strcmp("linux", uts.sysname) == 0) { + if (vsn[0] < 2 + || (vsn[0] == 2 && vsn[1] < 6) + || (vsn[0] == 2 && vsn[1] == 6 && vsn[2] < 33)) { + broken_get_monotonic_time = 1; + } + } + else if (strcmp("sunos", uts.sysname) == 0) { + if ((vsn[0] < 5 + || (vsn[0] == 5 && vsn[1] < 8)) +#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF) + && sysconf(_SC_NPROCESSORS_CONF) > 1 +#endif + ) { + broken_get_monotonic_time = 1; + } + } + +} + + +#endif /* ETHR_HAVE_ETHR_GET_MONOTONIC_TIME */ + ETHR_IMPL_NORETURN__ ethr_abort__(void) { |