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| author | David 'Digit' Turner <digit@google.com> | 2010-06-28 14:10:14 -0700 |
|---|---|---|
| committer | David 'Digit' Turner <digit@google.com> | 2010-07-02 15:09:57 -0700 |
| commit | 519763265ec0b634bd9c264a0aca034882458ecc (patch) | |
| tree | 263dc7f4fa4256869cea19e6ea8a077d29bd95ad /libc/docs/CHANGES.TXT | |
| parent | a02b93bd75a9d156117264d88069566e447397e2 (diff) | |
| download | bionic-519763265ec0b634bd9c264a0aca034882458ecc.zip bionic-519763265ec0b634bd9c264a0aca034882458ecc.tar.gz bionic-519763265ec0b634bd9c264a0aca034882458ecc.tar.bz2 | |
libc: Fix sem_post() implementation to wake up all waiting threads.
This also allows us to optimize the case where we increment an
uncontended semaphore (no need to call futex_wake() then).
Change-Id: Iad48efe8551dc66dc89d3e3f18c001e5a6c1939f
Diffstat (limited to 'libc/docs/CHANGES.TXT')
| -rw-r--r-- | libc/docs/CHANGES.TXT | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/docs/CHANGES.TXT b/libc/docs/CHANGES.TXT index 5a7a1ac..9389f7a 100644 --- a/libc/docs/CHANGES.TXT +++ b/libc/docs/CHANGES.TXT @@ -10,6 +10,10 @@ Differences between current and Android 2.2: - <semaphore.h>: Use private futexes for semaphore implementation, unless your set 'pshared' to non-0 when calling sem_init(). + Also fixed a bug in sem_post() to make it wake up all waiting + threads, instead of one. As a consequence, the maximum semaphore + value is now reduced to 0x3fffffff. + - <math.h>: Added sincos(), sincosf() and sincosl() (GLibc compatibility). - <sys/sysinfo.h>: Added missing sysinfo() system call implementation @@ -59,7 +63,6 @@ Differences between current and Android 2.2: - <sys/select.h>: add missing declaration for pselect() -- ------------------------------------------------------------------------------- Differences between Android 2.2. and Android 2.1: |