Signed-off-by: Khem Raj <raj.khem@gmail.com>

Update pthread_mutex_t definition and initializations.

6 files changed, 107 insertions, 12 deletions

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h
index 86b47037e..0f3bf838e 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h
@@ -43,11 +43,18 @@ typedef union
 } pthread_attr_t;
 
 
+typedef struct __pthread_internal_list
+{
+  struct __pthread_internal_list *__prev;
+  struct __pthread_internal_list *__next;
+} __pthread_list_t;
+
+
 /* Data structures for mutex handling.  The structure of the attribute
    type is deliberately not exposed.  */
 typedef union
 {
-  struct
+  struct __pthread_mutex_s
   {
     int __lock;
     unsigned int __count;
@@ -57,6 +64,8 @@ typedef union
        binary compatibility.  */
     int __kind;
     int __spins;
+    __pthread_list_t __list;
+#define __PTHREAD_MUTEX_HAVE_PREV       1
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
index 4d1c9450b..0ec6e5534 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
@@ -43,11 +43,17 @@ typedef union
 } pthread_attr_t;
 
 
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+
+
 /* Data structures for mutex handling.  The structure of the attribute
    type is not exposed on purpose.  */
 typedef union
 {
-  struct
+  struct __pthread_mutex_s
   {
     int __lock;
     unsigned int __count;
@@ -56,7 +62,11 @@ typedef union
        binary compatibility.  */
     int __kind;
     unsigned int __nusers;
-    int __spins;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/bits/pthreadtypes.h
index e14a48750..54f1a0652 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/bits/pthreadtypes.h
@@ -54,12 +54,24 @@ typedef union
   long int __align;
 } pthread_attr_t;
 
+#if _MIPS_SIM == _ABI64
+typedef struct __pthread_internal_list
+{
+  struct __pthread_internal_list *__prev;
+  struct __pthread_internal_list *__next;
+} __pthread_list_t;
+#else
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+#endif
 
 /* Data structures for mutex handling.  The structure of the attribute
    type is deliberately not exposed.  */
 typedef union
 {
-  struct
+  struct __pthread_mutex_s
   {
     int __lock;
     unsigned int __count;
@@ -70,10 +82,18 @@ typedef union
     /* KIND must stay at this position in the structure to maintain
        binary compatibility.  */
     int __kind;
-#if _MIPS_SIM != _ABI64
+#if _MIPS_SIM == _ABI64
+    int __spins;
+    __pthread_list_t __list;
+# define __PTHREAD_MUTEX_HAVE_PREV      1
+#else
     unsigned int __nusers;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
 #endif
-    int __spins;
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
index 90c069569..c94ed0c38 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
@@ -57,12 +57,24 @@ typedef union
   long int __align;
 } pthread_attr_t;
 
+#if __WORDSIZE == 64
+typedef struct __pthread_internal_list
+{
+  struct __pthread_internal_list *__prev;
+  struct __pthread_internal_list *__next;
+} __pthread_list_t;
+#else
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+#endif
 
 /* Data structures for mutex handling.  The structure of the attribute
    type is deliberately not exposed.  */
 typedef union
 {
-  struct
+  struct __pthread_mutex_s
   {
     int __lock;
     unsigned int __count;
@@ -73,10 +85,18 @@ typedef union
     /* KIND must stay at this position in the structure to maintain
        binary compatibility.  */
     int __kind;
-#if __WORDSIZE != 64
+#if __WORDSIZE == 64
+    int __spins;
+    __pthread_list_t __list;
+# define __PTHREAD_MUTEX_HAVE_PREV      1
+#else
     unsigned int __nusers;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
 #endif
-    int __spins;
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
index 3c5a28944..459d1ca79 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
@@ -58,11 +58,25 @@ typedef union
 } pthread_attr_t;
 
 
+#if __WORDSIZE == 64
+typedef struct __pthread_internal_list
+{
+  struct __pthread_internal_list *__prev;
+  struct __pthread_internal_list *__next;
+} __pthread_list_t;
+#else
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+#endif
+
+
 /* Data structures for mutex handling.  The structure of the attribute
    type is deliberately not exposed.  */
 typedef union
 {
-  struct
+  struct __pthread_mutex_s
   {
     int __lock;
     unsigned int __count;
@@ -73,10 +87,18 @@ typedef union
     /* KIND must stay at this position in the structure to maintain
        binary compatibility.  */
     int __kind;
-#if __WORDSIZE != 64
+#if __WORDSIZE == 64
+    int __spins;
+    __pthread_list_t __list;
+# define __PTHREAD_MUTEX_HAVE_PREV      1
+#else
     unsigned int __nusers;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
 #endif
-    int __spins;
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h
index 92fb08c95..51fdab0fb 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h
@@ -57,6 +57,20 @@ typedef union
 } pthread_attr_t;
 
 
+#if __WORDSIZE == 64
+typedef struct __pthread_internal_list
+{
+  struct __pthread_internal_list *__prev;
+  struct __pthread_internal_list *__next;
+} __pthread_list_t;
+#else
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+#endif
+
+
 /* Data structures for mutex handling.  The structure of the attribute
    type is not exposed on purpose.  */
 typedef union