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| author | dkf <donal.k.fellows@manchester.ac.uk> | 2018-09-28 09:50:58 (GMT) |
|---|---|---|
| committer | dkf <donal.k.fellows@manchester.ac.uk> | 2018-09-28 09:50:58 (GMT) |
| commit | 29fbee578473c16fcabaa07b8995dbb3e3073930 (patch) | |
| tree | b438a901c94afd9d821eeeabab6da92f60ee944f /doc/Thread.3 | |
| parent | 2f3fc1cfa29f6a4dac413ac62258bfb235feb257 (diff) | |
| parent | eede8c60a140b1ebb3eb6a795ecc703e89f466f4 (diff) | |
| download | tcl-29fbee578473c16fcabaa07b8995dbb3e3073930.zip tcl-29fbee578473c16fcabaa07b8995dbb3e3073930.tar.gz tcl-29fbee578473c16fcabaa07b8995dbb3e3073930.tar.bz2 | |
Implement TIP 509: reentrant mutexes on all platforms
Diffstat (limited to 'doc/Thread.3')
| -rw-r--r-- | doc/Thread.3 | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/doc/Thread.3 b/doc/Thread.3 index 5966a71..59bf488 100644 --- a/doc/Thread.3 +++ b/doc/Thread.3 @@ -45,7 +45,9 @@ int .AP Tcl_Condition *condPtr in A condition variable, which must be associated with a mutex lock. .AP Tcl_Mutex *mutexPtr in -A mutex lock. +.VS TIP509 +A recursive mutex lock. +.VE TIP509 .AP "const Tcl_Time" *timePtr in A time limit on the condition wait. NULL to wait forever. Note that a polling value of 0 seconds does not make much sense. @@ -135,7 +137,11 @@ Tcl provides \fBTcl_ThreadQueueEvent\fR and \fBTcl_ThreadAlert\fR for handling event queuing in multithreaded applications. See the \fBNotifier\fR manual page for more information on these procedures. .PP -A mutex is a lock that is used to serialize all threads through a piece +A mutex is a +.VS TIP509 +recursive +.VE TIP509 +lock that is used to serialize all threads through a piece of code by calling \fBTcl_MutexLock\fR and \fBTcl_MutexUnlock\fR. If one thread holds a mutex, any other thread calling \fBTcl_MutexLock\fR will block until \fBTcl_MutexUnlock\fR is called. |