Use mmap to create the pthread_internal_t.

[android-sdk/platform-bionic.git] / libc / bionic / pthread_internal.h

diff --git a/libc/bionic/pthread_internal.h b/libc/bionic/pthread_internal.h
index e05d15c79cdba05c1bc8ee8510da25f39b8db5ba..c5136c93cbfff8fb58f2e773c9d10d7ac8a4e510 100644 (file)
--- a/libc/bionic/pthread_internal.h
+++ b/libc/bionic/pthread_internal.h
@@ -30,6 +30,18 @@
 
 #include <pthread.h>
 
+/* Has the thread been detached by a pthread_join or pthread_detach call? */
+#define PTHREAD_ATTR_FLAG_DETACHED 0x00000001
+
+/* Was the thread's stack allocated by the user rather than by us? */
+#define PTHREAD_ATTR_FLAG_USER_ALLOCATED_STACK 0x00000002
+
+/* Has the thread been joined by another thread? */
+#define PTHREAD_ATTR_FLAG_JOINED 0x00000004
+
+/* Is this the main thread? */
+#define PTHREAD_ATTR_FLAG_MAIN_THREAD 0x80000000
+
 struct pthread_internal_t {
   struct pthread_internal_t* next;
   struct pthread_internal_t* prev;
@@ -56,6 +68,10 @@ struct pthread_internal_t {
     return (*cached_pid != 0);
   }
 
+  bool user_allocated_stack() {
+    return (attr.flags & PTHREAD_ATTR_FLAG_USER_ALLOCATED_STACK) != 0;
+  }
+
   void** tls;
 
   pthread_attr_t attr;
@@ -78,29 +94,21 @@ struct pthread_internal_t {
   char dlerror_buffer[__BIONIC_DLERROR_BUFFER_SIZE];
 };
 
+__LIBC_HIDDEN__ pthread_internal_t* __create_thread_struct();
+__LIBC_HIDDEN__ void __free_thread_struct(pthread_internal_t*);
 __LIBC_HIDDEN__ int __init_thread(pthread_internal_t* thread, bool add_to_thread_list);
 __LIBC_HIDDEN__ void __init_tls(pthread_internal_t* thread);
 __LIBC_HIDDEN__ void __init_alternate_signal_stack(pthread_internal_t*);
 __LIBC_HIDDEN__ void _pthread_internal_add(pthread_internal_t* thread);
-__LIBC_HIDDEN__ pthread_internal_t* __get_thread(void);
+
+/* Various third-party apps contain a backport of our pthread_rwlock implementation that uses this. */
+extern "C" __LIBC64_HIDDEN__ pthread_internal_t* __get_thread(void);
 
 __LIBC_HIDDEN__ void pthread_key_clean_all(void);
 __LIBC_HIDDEN__ void _pthread_internal_remove_locked(pthread_internal_t* thread);
 
-/* Has the thread been detached by a pthread_join or pthread_detach call? */
-#define PTHREAD_ATTR_FLAG_DETACHED 0x00000001
-
-/* Was the thread's stack allocated by the user rather than by us? */
-#define PTHREAD_ATTR_FLAG_USER_ALLOCATED_STACK 0x00000002
-
-/* Has the thread been joined by another thread? */
-#define PTHREAD_ATTR_FLAG_JOINED 0x00000004
-
-/* Is this the main thread? */
-#define PTHREAD_ATTR_FLAG_MAIN_THREAD 0x80000000
-
 /*
- * Traditionally we give threads a 1MiB stack. When we started
+ * Traditionally we gave threads a 1MiB stack. When we started
  * allocating per-thread alternate signal stacks to ease debugging of
  * stack overflows, we subtracted the same amount we were using there
  * from the default thread stack size. This should keep memory usage
@@ -111,8 +119,6 @@ __LIBC_HIDDEN__ void _pthread_internal_remove_locked(pthread_internal_t* thread)
 __LIBC_HIDDEN__ extern pthread_internal_t* g_thread_list;
 __LIBC_HIDDEN__ extern pthread_mutex_t g_thread_list_lock;
 
-__LIBC_HIDDEN__ int __timespec_from_absolute(timespec*, const timespec*, clockid_t);
-
 /* Needed by fork. */
 __LIBC_HIDDEN__ extern void __bionic_atfork_run_prepare();
 __LIBC_HIDDEN__ extern void __bionic_atfork_run_child();