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author | deischen <deischen@FreeBSD.org> | 2001-01-24 13:03:38 +0000 |
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committer | deischen <deischen@FreeBSD.org> | 2001-01-24 13:03:38 +0000 |
commit | ee1de6a067c70fbd8cb73facd64c3b0b275f9f83 (patch) | |
tree | 71d2853de2f283028592fa4119320bab82c18d68 /lib/libkse/thread/thr_sigaction.c | |
parent | 274959d59337555267567d4bde9a5a841c47d84f (diff) | |
download | FreeBSD-src-ee1de6a067c70fbd8cb73facd64c3b0b275f9f83.zip FreeBSD-src-ee1de6a067c70fbd8cb73facd64c3b0b275f9f83.tar.gz |
Add weak definitions for wrapped system calls. In general:
_foo - wrapped system call
foo - weak definition to _foo
and for cancellation points:
_foo - wrapped system call
__foo - enter cancellation point, call _foo(), leave
cancellation point
foo - weak definition to __foo
Change use of global _thread_run to call a function to get the
currently running thread.
Make all pthread_foo functions weak definitions to _pthread_foo,
where _pthread_foo is the implementation. This allows an application
to provide its own pthread functions.
Provide slightly different versions of pthread_mutex_lock and
pthread_mutex_init so that we can tell the difference between
a libc mutex and an application mutex. Threads holding mutexes
internal to libc should never be allowed to exit, call signal
handlers, or cancel.
Approved by: -arch
Diffstat (limited to 'lib/libkse/thread/thr_sigaction.c')
-rw-r--r-- | lib/libkse/thread/thr_sigaction.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/libkse/thread/thr_sigaction.c b/lib/libkse/thread/thr_sigaction.c index 4d13819..dba2f7e 100644 --- a/lib/libkse/thread/thr_sigaction.c +++ b/lib/libkse/thread/thr_sigaction.c @@ -33,10 +33,11 @@ */ #include <signal.h> #include <errno.h> -#ifdef _THREAD_SAFE #include <pthread.h> #include "pthread_private.h" +#pragma weak sigaction=_sigaction + int _sigaction(int sig, const struct sigaction * act, struct sigaction * oact) { @@ -49,6 +50,9 @@ _sigaction(int sig, const struct sigaction * act, struct sigaction * oact) errno = EINVAL; ret = -1; } else { + if (_thread_initial == NULL) + _thread_init(); + /* * Check if the existing signal action structure contents are * to be returned: @@ -98,7 +102,7 @@ _sigaction(int sig, const struct sigaction * act, struct sigaction * oact) gact.sa_handler = (void (*) ()) _thread_sig_handler; /* Change the signal action in the kernel: */ - if (_thread_sys_sigaction(sig,&gact,NULL) != 0) + if (__sys_sigaction(sig,&gact,NULL) != 0) ret = -1; } } @@ -106,6 +110,3 @@ _sigaction(int sig, const struct sigaction * act, struct sigaction * oact) /* Return the completion status: */ return (ret); } - -__strong_reference(_sigaction, sigaction); -#endif |