Revert "Use C++11 threading support instead of pthread"cydia

C++ threading support is on available on iOS7

This reverts commit b28636e54f682dc65aef169f201a34a8e2893369.

1 files changed, 24 insertions, 2 deletions

diff --git a/apt-pkg/contrib/error.cc b/apt-pkg/contrib/error.cc
index 143b99557..2de13b4ae 100644
--- a/apt-pkg/contrib/error.cc
+++ b/apt-pkg/contrib/error.cc
@@ -32,11 +32,33 @@
 									/*}}}*/
 
 // Global Error Object							/*{{{*/
+/* If the implementation supports posix threads then the accessor function
+   is compiled to be thread safe otherwise a non-safe version is used. A
+   Per-Thread error object is maintained in much the same manner as libc
+   manages errno */
+#if defined(_POSIX_THREADS) && defined(HAVE_PTHREAD)
+#include <pthread.h>
+
+static pthread_key_t ErrorKey;
+static void ErrorDestroy(void *Obj) { delete (GlobalError *)Obj; };
+static void KeyAlloc() { pthread_key_create(&ErrorKey, ErrorDestroy); };
+
 GlobalError *_GetErrorObj()
 {
-   static thread_local GlobalError Obj;
-   return &Obj;
+   static pthread_once_t Once = PTHREAD_ONCE_INIT;
+   pthread_once(&Once, KeyAlloc);
+
+   void *Res = pthread_getspecific(ErrorKey);
+   if (Res == 0)
+      pthread_setspecific(ErrorKey, Res = new GlobalError);
+   return (GlobalError *)Res;
+}
+#else
+GlobalError *_GetErrorObj() {
+    static GlobalError *Obj = new GlobalError;
+    return Obj;
 }
+#endif
 									/*}}}*/
 // GlobalError::GlobalError - Constructor				/*{{{*/
 GlobalError::GlobalError() : PendingFlag(false) {}