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engine: platform: directly call __NR_gettid syscall for compatibility with older systems

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This commit is contained in:
Alibek Omarov
2024-11-18 10:07:10 +03:00
parent a29b6772b9
commit ac6dc2c2d3
2 changed files with 16 additions and 19 deletions
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22
engine/platform/linux/sys_linux.c
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@@ -26,32 +26,24 @@ GNU General Public License for more details.
#include <time.h>
#include <unistd.h>
#include <math.h>
#include <sys/syscall.h>
#include "platform/platform.h"
#include <sys/types.h>
#if defined( __GLIBC__ )
#if ( __GLIBC__ <= 2 ) && ( __GLIBC_MINOR__ <= 30 )
// Library support was added in glibc 2.30.
// Earlier glibc versions did not provide a wrapper for this system call,
// necessitating the use of syscall(2).
#include <sys/syscall.h>
static pid_t gettid( void )
{
return syscall( SYS_gettid );
}
#endif // ( __GLIBC__ <= 2 ) && ( __GLIBC_MINOR__ <= 30 )
// Glibc misses this macro in POSIX headers (bits/types/sigevent_t.h)
// but it does present in Linux headers (asm-generic/siginfo.h) and musl
#if !defined( sigev_notify_thread_id )
#define sigev_notify_thread_id _sigev_un._tid
#endif // !defined( sigev_notify_thread_id )
#endif // defined(__GLIBC__)
static void *g_hsystemd;
static int (*g_pfn_sd_notify)( int unset_environment, const char *state );
int Linux_GetProcessID( void )
{
return syscall( __NR_gettid );
}
qboolean Platform_DebuggerPresent( void )
{
char buf[4096];
@@ -163,7 +155,7 @@ void Linux_SetTimer( float tm )
// this path availiable in POSIX, but may signal wrong thread...
// sev.sigev_notify = SIGEV_SIGNAL;
sev.sigev_notify = SIGEV_THREAD_ID;
sev.sigev_notify_thread_id = gettid();
sev.sigev_notify_thread_id = Linux_GetProcessID();
sev.sigev_signo = DEBUG_TIMER_SIGNAL;
sev.sigev_value.sival_ptr = &timerid;
timer_create( CLOCK_REALTIME, &sev, &timerid );