* gcc.c (MFWRAP_SPEC): Don't wrap pthread_join or pthread_exit.

        * acinclude.m4: New file.
        * configure.ac: Invoke LIBMUDFLAP_CHECK_TLS.
        * configure, config.h.in, Makefile.in, testsuite/Makefile.in: Rebuild.
        * mf-hooks1.c (__mf_0fn_malloc): Move body from ...
        (__mf_0fn_calloc): ... here.
        * mf-hooks3.c (struct pthread_info): Remove.
        (__mf_pthread_info, __mf_pthread_info_idx): Remove.
        (LIBMUDFLAPTH_THREADS_MAX): Set to 1021.
        (struct mf_thread_data): New.
        (mf_thread_data, mf_thread_data_lock): New.
        (__mf_allocate_blank_threadinfo): Remove.
        (__mf_find_threadinfo): Rewrite and simplify.  Only use if TLS is
        not available.
        (__mf_state_perthread): Remove.
        (__mf_get_state, __mf_set_state): New.
        (__mf_pthread_cleanup): Use &errno, rather than saved pointer.
        Update mf_thread_data killing procedure.
        (__mf_pthread_spawner): Similarly.
        (__mf_0fn_pthread_create): Only use wrapper if necessary.  Remove
        code to allocate thread stack space.
        (__mf_0fn_pthread_join, pthread_join): Remove.
        (__mf_0fn_pthread_exit, pthread_exit): Remove.
        * mf-impl.h (dyn_pthread_join, dyn_pthread_exit): Remove.
        (__mf_state_1): Rename from __mf_state; use TLS when available.
        (__mf_get_state, __mf_set_state): New.  Update all users.
        * mf-runtime.c (begin_recursion_protect1): New.
        (BEGIN_RECURSION_PROTECT): Use it.
        (__mf_state_1): Rename from __mf_state; use TLS when available.
        (threads_active_p): Remove.
        (__mf_usage): Compute it directly.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102108 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 19 insertions, 8 deletions

diff --git a/libmudflap/mf-impl.h b/libmudflap/mf-impl.h
index 47abdf602e7..53c25b392ca 100644
--- a/libmudflap/mf-impl.h
+++ b/libmudflap/mf-impl.h
@@ -207,9 +207,7 @@ enum __mf_dynamic_index
   dyn_munmap, dyn_realloc,
   dyn_INITRESOLVE,  /* Marker for last init-time resolution. */
 #ifdef LIBMUDFLAPTH
-  dyn_pthread_create,
-  dyn_pthread_join,
-  dyn_pthread_exit
+  dyn_pthread_create
 #endif
 };
 
@@ -233,12 +231,25 @@ extern pthread_mutex_t __mf_biglock;
 #define UNLOCKTH() do {} while (0)
 #endif
 
-#ifdef LIBMUDFLAPTH
-extern enum __mf_state_enum *__mf_state_perthread ();
-#define __mf_state (* __mf_state_perthread ())
+#if defined(LIBMUDFLAPTH) && !defined(HAVE_TLS)
+extern enum __mf_state_enum __mf_get_state (void);
+extern void __mf_set_state (enum __mf_state_enum);
 #else
-extern enum __mf_state_enum __mf_state;
+# ifdef LIBMUDFLAPTH
+extern __thread enum __mf_state_enum __mf_state_1;
+# else
+extern enum __mf_state_enum __mf_state_1;
+# endif
+static inline enum __mf_state_enum __mf_get_state (void)
+{
+  return __mf_state_1;
+}
+static inline void __mf_set_state (enum __mf_state_enum s)
+{
+  __mf_state_1 = s;
+}
 #endif
+
 extern int __mf_starting_p;
 extern struct __mf_options __mf_opts;
 
@@ -362,7 +373,7 @@ ret __mfwrap_ ## fname (__VA_ARGS__)
   {                                         \
     return CALL_BACKUP(fname, __VA_ARGS__); \
   }                                         \
-  else if (UNLIKELY (__mf_state == reentrant))   \
+  else if (UNLIKELY (__mf_get_state () == reentrant))   \
   {                                         \
     extern unsigned long __mf_reentrancy;   \
     __mf_reentrancy ++; \