65 строки
1.5 KiB
Plaintext
65 строки
1.5 KiB
Plaintext
dnl
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dnl $HEADER$
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dnl
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define(LAM_CHECK_PTHREAD_PIDS,[
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#
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# Arguments: none
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#
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# Dependencies: None
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#
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# Sets:
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# LAM_THREADS_HAVE_DIFFERENT_PIDS (variable)
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#
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# Test for Linux-like threads in the system. We will need to handle things like
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# getpid() differently in the case of a Linux-like threads model.
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#
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AH_TEMPLATE([LAM_THREADS_HAVE_DIFFERENT_PIDS],
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[Do threads have different pids (pthreads on linux)])
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AC_MSG_CHECKING([if threads have different pids (pthreads on linux)])
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CPPFLAGS_save="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $THREAD_CPPFLAGS"
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LDFLAGS_save="$LDFLAGS"
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LDFLAGS="$LDFLAGS $THREAD_LDFLAGS"
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LIBS_save="$LIBS"
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LIBS="$LIBS $THREAD_LIBS"
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AC_TRY_RUN([#include <pthread.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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void *checkpid(void *arg);
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int main(int argc, char* argv[]) {
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pthread_t thr;
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int pid, retval;
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pid = getpid();
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pthread_create(&thr, NULL, checkpid, &pid);
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pthread_join(thr, (void **) &retval);
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exit(retval);
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}
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void *checkpid(void *arg) {
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int ret;
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int ppid = *((int *) arg);
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if (ppid == getpid())
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ret = 0;
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else
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ret = 1;
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pthread_exit((void *) ret);
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}],
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[MSG=no LAM_THREADS_HAVE_DIFFERENT_PIDS=0],
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[MSG=yes LAM_THREADS_HAVE_DIFFERENT_PIDS=1])
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CPPFLAGS="$CPPFLAGS_save"
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LDFLAGS="$LDFLAGS_save"
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LIBS="$LIBS_save"
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AC_MSG_RESULT([$MSG])
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AC_DEFINE_UNQUOTED(LAM_THREADS_HAVE_DIFFERENT_PIDS, $LAM_THREADS_HAVE_DIFFERENT_PIDS)
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#
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# if pthreads is not available, then the system does not have an insane threads
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# model
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#
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unset MSG])dnl
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