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Shell Programming and Scripting
Measure thread execution (in C, unix)
Post 302507195 by Tinkh on Wednesday 23rd of March 2011 04:10:16 AM
03-23-2011
Measure thread execution (in C, unix)
Hi,
I have a simulation program which creates two threads and I would like to know if I can measure the time of each individual thread. Threads communicate (I use pthread to manage them) and I want to measure communication time. I found a solution with clock_gettime and CLOCK_THREAD_CPUTIME_ID but nothing for Solaris OS.
French forums are insufficient, so I hope to find help here
Note: two threads on identical topic merged. Please do not post twice on the same topic - this kind of hodge-podge results from doing that.
I have a simulation program which creates two threads and I would like to know if I can measure the time of each individual thread. Threads communicate (I use pthread to manage them) and I want to measure communication time. I found a solution with clock_gettime and CLOCK_THREAD_CPUTIME_ID but nothing for Solaris OS.
French forums are insufficient, so I hope to find help here
Note: two threads on identical topic merged. Please do not post twice on the same topic - this kind of hodge-podge results from doing that.
Last edited by jim mcnamara; 03-24-2011 at 12:50 PM.. Reason: duplicate topics merged
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LEARN ABOUT FREEBSD
pthread_detach
PTHREAD_DETACH(3) BSD Library Functions Manual PTHREAD_DETACH(3) NAME
pthread_detach -- detach a thread LIBRARY
POSIX Threads Library (libpthread, -lpthread) SYNOPSIS
#include <pthread.h> int pthread_detach(pthread_t thread); DESCRIPTION
The pthread_detach() function is used to indicate to the implementation that storage for the thread thread can be reclaimed when the thread terminates. If thread has not terminated, pthread_detach() will not cause it to terminate. The effect of multiple pthread_detach() calls on the same target thread is unspecified. RETURN VALUES
If successful, the pthread_detach() function will return zero. Otherwise an error number will be returned to indicate the error. Note that the function does not change the value of errno as it did for some drafts of the standard. These early drafts also passed a pointer to pthread_t as the argument. Beware! ERRORS
The pthread_detach() function will fail if: [EINVAL] The implementation has detected that the value specified by thread does not refer to a joinable thread. [ESRCH] No thread could be found corresponding to that specified by the given thread ID, thread. SEE ALSO
pthread_join(3) STANDARDS
The pthread_detach() function conforms to ISO/IEC 9945-1:1996 (``POSIX.1''). BSD
April 4, 1996 BSD