cuberite/libevent
1
0
Fork 0
mirror of https://github.com/cuberite/libevent.git synced 2025-09-17 08:17:42 -04:00
Code Issues Packages Projects Releases Wiki Activity

test: move thread into realtime class even on EVENT__DISABLE_THREAD_SUPPORT

Browse Source 
(cherry picked from commit ca2b72c546d80dfb4fa255b20ef4a829ed102a70)
This commit is contained in:
Azat Khuzhin 2020-01-14 21:45:01 +03:00
parent 5a400c1f28
commit 0ef87f5f0e
3 changed files with 59 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
test/regress_main.c
View File

@ -33,6 +33,14 @@
#include <fcntl.h>
#endif
/* move_pthread_to_realtime_scheduling_class() */
#ifdef EVENT__HAVE_MACH_MACH_H
#include <mach/mach.h>
#endif
#ifdef EVENT__HAVE_MACH_MACH_TIME_H
#include <mach/mach_time.h>
#endif
#if defined(__APPLE__) && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
#if (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1060 && \
__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070)
@ -188,6 +196,45 @@ ignore_log_cb(int s, const char *msg)
{
}
/**
* Put into the real time scheduling class for better timers latency.
* https://developer.apple.com/library/archive/technotes/tn2169/_index.html#//apple_ref/doc/uid/DTS40013172-CH1-TNTAG6000
*/
#if defined(__APPLE__)
static void move_pthread_to_realtime_scheduling_class(pthread_t pthread)
{
mach_timebase_info_data_t info;
mach_timebase_info(&info);
const uint64_t NANOS_PER_MSEC = 1000000ULL;
double clock2abs =
((double)info.denom / (double)info.numer) * NANOS_PER_MSEC;
thread_time_constraint_policy_data_t policy;
policy.period = 0;
policy.computation = (uint32_t)(5 * clock2abs); // 5 ms of work
policy.constraint = (uint32_t)(10 * clock2abs);
policy.preemptible = FALSE;
int kr = thread_policy_set(pthread_mach_thread_np(pthread),
THREAD_TIME_CONSTRAINT_POLICY,
(thread_policy_t)&policy,
THREAD_TIME_CONSTRAINT_POLICY_COUNT);
if (kr != KERN_SUCCESS) {
mach_error("thread_policy_set:", kr);
exit(1);
}
}
void thread_setup(THREAD_T pthread)
{
move_pthread_to_realtime_scheduling_class(pthread);
}
#else /** \__APPLE__ */
void thread_setup(THREAD_T pthread) {}
#endif /** \!__APPLE__ */
void *
basic_test_setup(const struct testcase_t *testcase)
{
@ -195,9 +242,7 @@ basic_test_setup(const struct testcase_t *testcase)
evutil_socket_t spair[2] = { -1, -1 };
struct basic_test_data *data = NULL;
#ifndef EVENT__DISABLE_THREAD_SUPPORT
thread_setup(THREAD_SELF());
#endif
#ifndef _WIN32
if (testcase->flags & TT_ENABLE_IOCP_FLAG)

45
test/regress_thread.c
View File

@ -66,51 +66,6 @@
#include "time-internal.h"
#include "regress_thread.h"
/**
* Put into the real time scheduling class for better timers latency.
* https://developer.apple.com/library/archive/technotes/tn2169/_index.html#//apple_ref/doc/uid/DTS40013172-CH1-TNTAG6000
*/
#if defined(__APPLE__)
#ifdef EVENT__HAVE_MACH_MACH_H
#include <mach/mach.h>
#endif
#ifdef EVENT__HAVE_MACH_MACH_TIME_H
#include <mach/mach_time.h>
#endif
static void move_pthread_to_realtime_scheduling_class(pthread_t pthread)
{
mach_timebase_info_data_t info;
mach_timebase_info(&info);
const uint64_t NANOS_PER_MSEC = 1000000ULL;
double clock2abs =
((double)info.denom / (double)info.numer) * NANOS_PER_MSEC;
thread_time_constraint_policy_data_t policy;
policy.period = 0;
policy.computation = (uint32_t)(5 * clock2abs); // 5 ms of work
policy.constraint = (uint32_t)(10 * clock2abs);
policy.preemptible = FALSE;
int kr = thread_policy_set(pthread_mach_thread_np(pthread),
THREAD_TIME_CONSTRAINT_POLICY,
(thread_policy_t)&policy,
THREAD_TIME_CONSTRAINT_POLICY_COUNT);
if (kr != KERN_SUCCESS) {
mach_error("thread_policy_set:", kr);
exit(1);
}
}
void thread_setup(THREAD_T pthread)
{
move_pthread_to_realtime_scheduling_class(pthread);
}
#else /** \__APPLE__ */
void thread_setup(THREAD_T pthread) {}
#endif /** \!__APPLE__ */
struct cond_wait {
void *lock;
void *cond;

28
test/regress_thread.h
View File

@ -27,9 +27,18 @@
#ifndef REGRESS_THREAD_H_INCLUDED_
#define REGRESS_THREAD_H_INCLUDED_
#include "regress.h"
#ifdef EVENT__HAVE_PTHREADS /** PTHREADS */
#if defined(_WIN32) /** _WIN32 */
#define THREAD_T void * /* HANDLE */
#define THREAD_FN unsigned __stdcall
#define THREAD_RETURN() return (0)
#define THREAD_SELF() GetCurrentThreadId()
#define THREAD_START(threadvar, fn, arg) do { \
uintptr_t threadhandle = _beginthreadex(NULL,0,fn,(arg),0,NULL); \
(threadvar) = (THREAD_T)threadhandle; \
thread_setup(threadvar); \
} while (0)
#define THREAD_JOIN(th) WaitForSingleObject(th, INFINITE)
#else /* !_WIN32 */
#include <pthread.h>
#define THREAD_T pthread_t
#define THREAD_FN void *
@ -40,21 +49,8 @@
thread_setup(threadvar); \
} while (0)
#define THREAD_JOIN(th) pthread_join(th, NULL)
#elif defined(_WIN32) /** _WIN32 */
#define THREAD_T HANDLE
#define THREAD_FN unsigned __stdcall
#define THREAD_RETURN() return (0)
#define THREAD_SELF() GetCurrentThreadId()
#define THREAD_START(threadvar, fn, arg) do { \
uintptr_t threadhandle = _beginthreadex(NULL,0,fn,(arg),0,NULL); \
(threadvar) = (HANDLE) threadhandle; \
thread_setup(threadvar); \
} while (0)
#define THREAD_JOIN(th) WaitForSingleObject(th, INFINITE)
#endif /* \!_WIN32 */
#ifndef EVENT__DISABLE_THREAD_SUPPORT
void thread_setup(THREAD_T pthread);
#endif
#endif