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Fix for configure to detect library correctly.

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Fix to check library in use during runtime.
Fix for Bug#16995, "idle connections not being killed due to timeout when NPTL is used".


BUILD/SETUP.sh:
  To avoid warnings during compilation.
configure.in:
  Fixed configure so that it can correctly detect
  between NPTL and Linuxthreads.
include/my_global.h:
  Fix for Linuxthreads.
include/my_pthread.h:
  Added defines for different libraries that can be detected.
  Currently only 'other', 'nptl', and 'lt' (linuxthreads) are
  being used.
  
  changed sigset() and signal() to my_sigset() and my_signal()
include/thr_alarm.h:
  Removed defines for Linuxthreads. This is now detected during
  runtime and handled in the thr_alarm.c
mysys/my_pthread.c:
  Runtime check for library.
mysys/thr_alarm.c:
  Runtime checks for library and corresponding
  signals.
sql/mysqld.cc:
  Added function for detecting thread library in use
  during start-up.
  
  THR_KILL_SIGNAL removed, setting signals during runtime.
This commit is contained in:
unknown
2007-01-22 02:32:07 +02:00
parent 7b2b2231a2
commit 454c763c6b
8 changed files with 216 additions and 152 deletions
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41
include/my_pthread.h
View File

@@ -28,6 +28,14 @@
extern "C" {
#endif /* __cplusplus */
/* Thread library */
#define THD_LIB_OTHER 1
#define THD_LIB_NPTL 2
#define THD_LIB_LT 4
extern uint thd_lib_detected;
#if defined(__WIN__) || defined(OS2)
#ifdef OS2
@@ -286,8 +294,8 @@ extern int my_pthread_create_detached;
#undef HAVE_PTHREAD_RWLOCK_RDLOCK
#undef HAVE_SNPRINTF
#define sigset(A,B) pthread_signal((A),(void (*)(int)) (B))
#define signal(A,B) pthread_signal((A),(void (*)(int)) (B))
#define my_sigset(A,B) pthread_signal((A),(void (*)(int)) (B))
#define my_signal(A,B) pthread_signal((A),(void (*)(int)) (B))
#define my_pthread_attr_setprio(A,B)
#endif /* defined(PTHREAD_SCOPE_GLOBAL) && !defined(PTHREAD_SCOPE_SYSTEM) */
@@ -324,14 +332,27 @@ extern int my_pthread_cond_init(pthread_cond_t *mp,
#if !defined(HAVE_SIGWAIT) && !defined(HAVE_mit_thread) && !defined(HAVE_rts_threads) && !defined(sigwait) && !defined(alpha_linux_port) && !defined(HAVE_NONPOSIX_SIGWAIT) && !defined(HAVE_DEC_3_2_THREADS) && !defined(_AIX)
int sigwait(sigset_t *setp, int *sigp); /* Use our implemention */
#endif
#if !defined(HAVE_SIGSET) && !defined(HAVE_mit_thread) && !defined(sigset)
#define sigset(A,B) do { struct sigaction s; sigset_t set; \
sigemptyset(&set); \
s.sa_handler = (B); \
s.sa_mask = set; \
s.sa_flags = 0; \
sigaction((A), &s, (struct sigaction *) NULL); \
/*
We define my_sigset() and use that instead of the system sigset() so that
we can favor an implementation based on sigaction(). On some systems, such
as Mac OS X, sigset() results in flags such as SA_RESTART being set, and
we want to make sure that no such flags are set.
*/
#if defined(HAVE_SIGACTION) && !defined(my_sigset)
#define my_sigset(A,B) do { struct sigaction s; sigset_t set; int rc; \
DBUG_ASSERT((A) != 0); \
sigemptyset(&set); \
s.sa_handler = (B); \
s.sa_mask = set; \
s.sa_flags = 0; \
rc= sigaction((A), &s, (struct sigaction *) NULL); \
DBUG_ASSERT(rc == 0); \
} while (0)
#elif defined(HAVE_SIGSET) && !defined(my_sigset)
#define my_sigset(A,B) sigset((A),(B))
#elif !defined(my_sigset)
#define my_sigset(A,B) signal((A),(B))
#endif
#ifndef my_pthread_setprio
@@ -416,7 +437,7 @@ struct tm *localtime_r(const time_t *clock, struct tm *res);
#undef pthread_detach_this_thread
#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(tmp); }
#undef sigset
#define sigset(A,B) pthread_signal((A),(void (*)(int)) (B))
#define my_sigset(A,B) pthread_signal((A),(void (*)(int)) (B))
#endif
#if ((defined(HAVE_PTHREAD_ATTR_CREATE) && !defined(HAVE_SIGWAIT)) || defined(HAVE_DEC_3_2_THREADS)) && !defined(HAVE_CTHREADS_WRAPPER)