5 files changed, 85 insertions, 1 deletions

diff --git a/indra/llcommon/llapr.cpp b/indra/llcommon/llapr.cpp
index 82530b1489..669afc5330 100644
--- a/indra/llcommon/llapr.cpp
+++ b/indra/llcommon/llapr.cpp
@@ -38,6 +38,7 @@
 apr_pool_t *gAPRPoolp = NULL; // Global APR memory pool
 LLVolatileAPRPool *LLAPRFile::sAPRFilePoolp = NULL ; //global volatile APR memory pool.
 apr_thread_mutex_t *gLogMutexp = NULL;
+apr_thread_mutex_t *gCallStacksLogMutexp = NULL;
 
 const S32 FULL_VOLATILE_APR_POOL = 1024 ; //number of references to LLVolatileAPRPool
 
@@ -51,6 +52,7 @@ void ll_init_apr()
 		
 		// Initialize the logging mutex
 		apr_thread_mutex_create(&gLogMutexp, APR_THREAD_MUTEX_UNNESTED, gAPRPoolp);
+		apr_thread_mutex_create(&gCallStacksLogMutexp, APR_THREAD_MUTEX_UNNESTED, gAPRPoolp);
 	}
 
 	if(!LLAPRFile::sAPRFilePoolp)
@@ -72,6 +74,14 @@ void ll_cleanup_apr()
 		apr_thread_mutex_destroy(gLogMutexp);
 		gLogMutexp = NULL;
 	}
+	if (gCallStacksLogMutexp)
+	{
+		// Clean up the logging mutex
+
+		// All other threads NEED to be done before we clean up APR, so this is okay.
+		apr_thread_mutex_destroy(gCallStacksLogMutexp);
+		gCallStacksLogMutexp = NULL;
+	}
 	if (gAPRPoolp)
 	{
 		apr_pool_destroy(gAPRPoolp);
diff --git a/indra/llcommon/llapr.h b/indra/llcommon/llapr.h
index 44ad2dd50f..63130a89fc 100644
--- a/indra/llcommon/llapr.h
+++ b/indra/llcommon/llapr.h
@@ -49,6 +49,7 @@
 #include "llstring.h"
 
 extern apr_thread_mutex_t* gLogMutexp;
+extern apr_thread_mutex_t* gCallStacksLogMutexp;
 
 /** 
  * @brief initialize the common apr constructs -- apr itself, the
diff --git a/indra/llcommon/lldate.h b/indra/llcommon/lldate.h
index 32825b18dc..7cc9c8aceb 100644
--- a/indra/llcommon/lldate.h
+++ b/indra/llcommon/lldate.h
@@ -140,6 +140,14 @@ public:
     bool operator!=(const LLDate& rhs) const { return (*this < rhs) || (rhs < *this); }
     bool operator==(const LLDate& rhs) const { return !(*this != rhs); }
 
+	/**
+	 * @brief Compare to epoch UTC.
+	 */
+
+	bool isNull() const { return mSecondsSinceEpoch == 0.0; }
+	bool notNull() const { return mSecondsSinceEpoch != 0.0; }
+	 
+
 private:
 	F64 mSecondsSinceEpoch;
 };
diff --git a/indra/llcommon/llerror.cpp b/indra/llcommon/llerror.cpp
index d671decccb..b135dafb3c 100644
--- a/indra/llcommon/llerror.cpp
+++ b/indra/llcommon/llerror.cpp
@@ -1223,9 +1223,62 @@ namespace LLError
 	char** LLCallStacks::sBuffer = NULL ;
 	S32    LLCallStacks::sIndex  = 0 ;
 
+	class CallStacksLogLock
+	{
+	public:
+		CallStacksLogLock();
+		~CallStacksLogLock();
+		bool ok() const { return mOK; }
+	private:
+		bool mLocked;
+		bool mOK;
+	};
+	
+	CallStacksLogLock::CallStacksLogLock()
+		: mLocked(false), mOK(false)
+	{
+		if (!gCallStacksLogMutexp)
+		{
+			mOK = true;
+			return;
+		}
+		
+		const int MAX_RETRIES = 5;
+		for (int attempts = 0; attempts < MAX_RETRIES; ++attempts)
+		{
+			apr_status_t s = apr_thread_mutex_trylock(gCallStacksLogMutexp);
+			if (!APR_STATUS_IS_EBUSY(s))
+			{
+				mLocked = true;
+				mOK = true;
+				return;
+			}
+
+			ms_sleep(1);
+		}
+
+		// We're hosed, we can't get the mutex.  Blah.
+		std::cerr << "CallStacksLogLock::CallStacksLogLock: failed to get mutex for log"
+					<< std::endl;
+	}
+	
+	CallStacksLogLock::~CallStacksLogLock()
+	{
+		if (mLocked)
+		{
+			apr_thread_mutex_unlock(gCallStacksLogMutexp);
+		}
+	}
+
 	//static
    void LLCallStacks::push(const char* function, const int line)
    {
+	   CallStacksLogLock lock;
+       if (!lock.ok())
+       {
+           return;
+       }
+
 	   if(!sBuffer)
 	   {
 		   sBuffer = new char*[512] ;
@@ -1261,6 +1314,12 @@ namespace LLError
    //static
    void LLCallStacks::end(std::ostringstream* _out)
    {
+	   CallStacksLogLock lock;
+       if (!lock.ok())
+       {
+           return;
+       }
+
 	   if(!sBuffer)
 	   {
 		   sBuffer = new char*[512] ;
@@ -1283,6 +1342,12 @@ namespace LLError
    //static
    void LLCallStacks::print()
    {
+	   CallStacksLogLock lock;
+       if (!lock.ok())
+       {
+           return;
+       }
+
        if(sIndex > 0)
        {
            llinfos << " ************* PRINT OUT LL CALL STACKS ************* " << llendl ;
diff --git a/indra/llcommon/llversionviewer.h b/indra/llcommon/llversionviewer.h
index 15f0e98330..a28d0f7268 100644
--- a/indra/llcommon/llversionviewer.h
+++ b/indra/llcommon/llversionviewer.h
@@ -35,7 +35,7 @@
 
 const S32 LL_VERSION_MAJOR = 1;
 const S32 LL_VERSION_MINOR = 24;
-const S32 LL_VERSION_PATCH = 0;
+const S32 LL_VERSION_PATCH = 2;
 const S32 LL_VERSION_BUILD = 0;
 
 const char * const LL_CHANNEL = "Second Life Release";