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Here is a new patch that fixes two issues mentioned earlier in this thread. I don't have access to any machine running Solaris 2.x. So the changes in gthr-posix95.h is not tested. -Doug ========================== 2007-09-13 Doug Kwan <dougkwan@google.com> * gcc/gthr-posix.h (__gthread_cond_broadcast, __gthread_cond_wait, __gthread_cond_wait_recursive): Add to extend interface for POSIX conditional variables. (__GTHREAD_HAS_COND): Macro defined to signify support of conditional variables. * gcc/gthr-posix95.h (__gthread_cond_broadcast, __gthread_cond_wait, __gthread_cond_wait_recursive): Add to extend interface for POSIX conditional variables. (__GTHREAD_HAS_COND): Macro defined to signify support of conditional variables. * gcc/gthr-single.h (__gthread_cond_broadcast, __gthread_cond_wait, __gthread_cond_wait_recursive): Add to extend interface for POSIX conditional variables. * gcc/gthr.h: Update comments to document new interface. * libstdc++-v3/include/ext/concurrent.h (class __mutex, class __recursive_mutex): Add new method gthread_mutex to access inner gthread mutex. [__GTHREAD_HAS_COND] (class __concurrence_broadcast_error, class __concurrence_wait_error, class __cond): Add. * guard.cc (recursive_push, recursive_pop): Delete. (init_in_progress_flag, set_init_in_progress_flag): Add to replace recursive_push and recursive_pop. (throw_recursive_init_exception): Add. (acquire, __cxa_guard_acquire, __cxa_guard_abort and __cxa_guard_release): [__GTHREAD_HAS_COND] Use a conditional for synchronization of static variable initialization. The global mutex is only held briefly when guards are accessed. [!__GTHREAD_HAS_COND] Fall back to the old code, which deadlocks. * testsuite/thread/guard.cc: Add new test. It deadlocks with the old locking code in libstdc++-v3/libsup++/guard.cc.
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diffs-deadlock-fix.txt
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