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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-08-25 03:35:29 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-08-25 03:35:29 +0200 |
| commit | f071795d80255755c4f3d2bdc6c55e67753b52b9 (patch) | |
| tree | 67a303b570cfd6336d5e7c8e9ce00e876ca6662a /sysdeps | |
| parent | 82b5340ebdb8f00589d548e6e2dc8c998f07d0c5 (diff) | |
| download | glibc-f071795d80255755c4f3d2bdc6c55e67753b52b9.tar.gz glibc-f071795d80255755c4f3d2bdc6c55e67753b52b9.tar.xz glibc-f071795d80255755c4f3d2bdc6c55e67753b52b9.zip | |
mach: Fix bogus negative return
One can be very unlucky to call time_now first just before a second switch, and mach_msg sleep just a bit more enough for the second time_now call to count one second too many (or even more if scheduling is really unlucky). So we have to protect against returning a bogus negative value in such case.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/mach/sleep.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/mach/sleep.c b/sysdeps/mach/sleep.c index 572be150bc..aa750c13c5 100644 --- a/sysdeps/mach/sleep.c +++ b/sysdeps/mach/sleep.c @@ -43,6 +43,9 @@ __sleep (unsigned int seconds) after = time_now (); __mach_port_destroy (__mach_task_self (), recv); + if (after - before > seconds) + return 0; + return seconds - (after - before); } weak_alias (__sleep, sleep) |