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| author | Rickard Green <[email protected]> | 2011-11-13 21:43:04 +0100 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2011-11-13 21:43:04 +0100 |
| commit | 32ef224c9769cd9359496953075e0133358ccf86 (patch) | |
| tree | 791517a9be6dbf7a9081192edbf96e69f086d2e1 /erts/emulator/beam/erl_smp.h | |
| parent | ca58731b5df58aa2a8b42c583d1ba7bb929e72b2 (diff) | |
| parent | 15774d2ac5ba38dba287309f91eb7e4f58b9a636 (diff) | |
| download | otp-32ef224c9769cd9359496953075e0133358ccf86.tar.gz otp-32ef224c9769cd9359496953075e0133358ccf86.tar.bz2 otp-32ef224c9769cd9359496953075e0133358ccf86.zip | |
Merge branch 'rickard/win-cs-mutex/OTP-9671'
* rickard/win-cs-mutex/OTP-9671:
Use critical sections as mutex implementation on Windows
Diffstat (limited to 'erts/emulator/beam/erl_smp.h')
| -rw-r--r-- | erts/emulator/beam/erl_smp.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_smp.h b/erts/emulator/beam/erl_smp.h index a89ddfbcc1..63179dfad4 100644 --- a/erts/emulator/beam/erl_smp.h +++ b/erts/emulator/beam/erl_smp.h @@ -822,6 +822,16 @@ erts_smp_cnd_wait(erts_smp_cnd_t *cnd, erts_smp_mtx_t *mtx) #endif } +/* + * IMPORTANT note about erts_smp_cnd_signal() and erts_smp_cnd_broadcast() + * + * POSIX allow a call to `pthread_cond_signal' or `pthread_cond_broadcast' + * even though the associated mutex/mutexes isn't/aren't locked by the + * caller. Our implementation do not allow that in order to avoid a + * performance penalty. That is, all associated mutexes *need* to be + * locked by the caller of erts_smp_cnd_signal()/erts_smp_cnd_broadcast()! + */ + ERTS_GLB_INLINE void erts_smp_cnd_signal(erts_smp_cnd_t *cnd) { |