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Overview
| Comment: | * doc/Thread.3: Updated documentation of Tcl_MutexLock to indicate that the recursive locking behavior is undefined. On Windows, it does not block, on Unix it deadlocks. [Bug: 1275] |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | core-8-1-branch-old |
| Files: | files | file ages | folders |
| SHA1: |
e1a0b7d0c881ec2bf190ba02239b618c |
| User & Date: | stanton 1999-03-25 19:43:34.000 |
Context
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1999-03-25
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| 19:46 | * unix/Makefile.in (dist): Added tcl.decls and tclInt.decls to source distribution. [Bug: 1571] check-in: 539c0e1656 user: stanton tags: core-8-1-branch-old | |
| 19:43 | * doc/Thread.3: Updated documentation of Tcl_MutexLock to indicate that the recursive locking behavi... check-in: e1a0b7d0c8 user: stanton tags: core-8-1-branch-old | |
| 17:20 | defs: lint io.test: fix for bug 1580--"after 100" calls in test scripts were not waiting long ... check-in: 5c981db38c user: hershey tags: core-8-1-branch-old | |
Changes
Changes to ChangeLog.
1 2 3 4 5 6 7 | 1999-03-24 <[email protected]> * tests/execute.test: * generic/tclExecute.c (TclExecuteByteCode): Fixed expression code that incorrectly returned floating point values for integers if the internal rep happened to be a double. Now we check to see if the object has a string rep that looks like an integer before | > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 | 1999-03-25 <[email protected]> * doc/Thread.3: Updated documentation of Tcl_MutexLock to indicate that the recursive locking behavior is undefined. On Windows, it does not block, on Unix it deadlocks. [Bug: 1275] 1999-03-24 <[email protected]> * tests/execute.test: * generic/tclExecute.c (TclExecuteByteCode): Fixed expression code that incorrectly returned floating point values for integers if the internal rep happened to be a double. Now we check to see if the object has a string rep that looks like an integer before |
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Changes to doc/Thread.3.
1 2 3 4 5 6 | '\" '\" Copyright (c) 1998 Sun Microsystems, Inc. '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" | | | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | '\" '\" Copyright (c) 1998 Sun Microsystems, Inc. '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" '\" RCS: @(#) $Id: Thread.3,v 1.1.2.3 1999/03/25 19:43:34 stanton Exp $ '\" .so man.macros .TH Tcl_ConditionNotify 3 "8.1" Tcl "Tcl Library Procedures" .BS .SH NAME Tcl_ConditionNotify, Tcl_ConditionWait, Tcl_GetThreadData, Tcl_MutexLock, Tcl_MutexUnlock \- thread synchronization support. .SH SYNOPSIS .nf \fB#include <tcl.h>\fR .sp |
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49 50 51 52 53 54 55 | .BE .SH DESCRIPTION .PP A mutex is a 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 | | > | > > | 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | .BE .SH DESCRIPTION .PP A mutex is a 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. .VS The result of locking a mutex twice from the same thread is undefined. On some platforms it will result in a deadlock. .VE \fBTcl_MutexLock\fR and \fBTcl_MutexUnlock\fR procedures are defined as empty macros if not compiling with threads enabled. .PP A condition variable is used as a signaling mechanism: a thread can lock a mutex and then wait on a condition variable with \fBTcl_ConditionWait\fR. This atomically releases the mutex lock and blocks the waiting thread until another thread calls |
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