Merge "Reserve space in pthread structures for future extensibility."
diff --git a/libc/include/pthread.h b/libc/include/pthread.h
index f93f9e9..3f59b91 100644
--- a/libc/include/pthread.h
+++ b/libc/include/pthread.h
@@ -35,17 +35,26 @@
#include <limits.h>
#include <sys/types.h>
+#ifdef __LP64__
+ #define __RESERVED_INITIALIZER , {0}
+#else
+ #define __RESERVED_INITIALIZER
+#endif
+
typedef struct {
int volatile value;
+#ifdef __LP64__
+ char __reserved[36];
+#endif
} pthread_mutex_t;
#define __PTHREAD_MUTEX_INIT_VALUE 0
#define __PTHREAD_RECURSIVE_MUTEX_INIT_VALUE 0x4000
#define __PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE 0x8000
-#define PTHREAD_MUTEX_INITIALIZER {__PTHREAD_MUTEX_INIT_VALUE}
-#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER {__PTHREAD_RECURSIVE_MUTEX_INIT_VALUE}
-#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER {__PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE}
+#define PTHREAD_MUTEX_INITIALIZER {__PTHREAD_MUTEX_INIT_VALUE __RESERVED_INITIALIZER}
+#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER {__PTHREAD_RECURSIVE_MUTEX_INIT_VALUE __RESERVED_INITIALIZER}
+#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER {__PTHREAD_ERRORCHECK_MUTEX_INIT_VALUE __RESERVED_INITIALIZER}
enum {
PTHREAD_MUTEX_NORMAL = 0,
@@ -60,9 +69,12 @@
typedef struct {
int volatile value;
+#ifdef __LP64__
+ char __reserved[44];
+#endif
} pthread_cond_t;
-#define PTHREAD_COND_INITIALIZER {0}
+#define PTHREAD_COND_INITIALIZER {0 __RESERVED_INITIALIZER}
typedef struct {
uint32_t flags;
@@ -71,6 +83,9 @@
size_t guard_size;
int32_t sched_policy;
int32_t sched_priority;
+#ifdef __LP64__
+ char __reserved[16];
+#endif
} pthread_attr_t;
typedef long pthread_mutexattr_t;
@@ -79,13 +94,13 @@
typedef int pthread_rwlockattr_t;
typedef struct {
- pthread_mutex_t lock;
- pthread_cond_t cond;
- int numLocks;
- int writerThreadId;
- int pendingReaders;
- int pendingWriters;
- void* reserved[4]; /* for future extensibility */
+ pthread_mutex_t lock;
+ pthread_cond_t cond;
+ int numLocks;
+ int writerThreadId;
+ int pendingReaders;
+ int pendingWriters;
+ void* __reserved[4];
} pthread_rwlock_t;
#define PTHREAD_RWLOCK_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0, 0, 0, { NULL, NULL, NULL, NULL } }
@@ -95,7 +110,7 @@
typedef volatile int pthread_once_t;
-#define PTHREAD_ONCE_INIT 0
+#define PTHREAD_ONCE_INIT 0
#define PTHREAD_STACK_MIN (2 * PAGE_SIZE)