[tfaber] 64970: [RTL] - Implement RtlTryEnterHeapLock and use it to fix RtlpDphEnterCriticalSection

Author: tfaber
Date: Fri Oct 24 19:05:54 2014
New Revision: 64970

URL: http://svn.reactos.org/svn/reactos?rev=64970&view=rev
Log:
[RTL]
- Implement RtlTryEnterHeapLock and use it to fix RtlpDphEnterCriticalSection

Modified:
    trunk/reactos/dll/ntdll/rtl/libsupp.c
    trunk/reactos/lib/rtl/heappage.c
    trunk/reactos/lib/rtl/rtlp.h
    trunk/reactos/ntoskrnl/rtl/libsupp.c

Modified: trunk/reactos/dll/ntdll/rtl/libsupp.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/ntdll/rtl/libsupp.c?re…
==============================================================================
--- trunk/reactos/dll/ntdll/rtl/libsupp.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/ntdll/rtl/libsupp.c	[iso-8859-1] Fri Oct 24 19:05:54 2014
@@ -125,6 +125,15 @@
     UNREFERENCED_PARAMETER(Exclusive);
 
     return RtlEnterCriticalSection(&Lock->CriticalSection);
+}
+
+BOOLEAN
+NTAPI
+RtlTryEnterHeapLock(IN OUT PHEAP_LOCK Lock, IN BOOLEAN Exclusive)
+{
+    UNREFERENCED_PARAMETER(Exclusive);
+
+    return RtlTryEnterCriticalSection(&Lock->CriticalSection);
 }
 
 NTSTATUS

Modified: trunk/reactos/lib/rtl/heappage.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/heappage.c?rev=649…
==============================================================================
--- trunk/reactos/lib/rtl/heappage.c	[iso-8859-1] (original)
+++ trunk/reactos/lib/rtl/heappage.c	[iso-8859-1] Fri Oct 24 19:05:54 2014
@@ -236,7 +236,7 @@
     if (Flags & HEAP_NO_SERIALIZE)
     {
         /* More complex scenario */
-        if (!RtlEnterHeapLock(DphRoot->HeapCritSect, TRUE))
+        if (!RtlTryEnterHeapLock(DphRoot->HeapCritSect, TRUE))
         {
             if (!DphRoot->nRemoteLockAcquired)
             {

Modified: trunk/reactos/lib/rtl/rtlp.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/rtlp.h?rev=64970&a…
==============================================================================
--- trunk/reactos/lib/rtl/rtlp.h	[iso-8859-1] (original)
+++ trunk/reactos/lib/rtl/rtlp.h	[iso-8859-1] Fri Oct 24 19:05:54 2014
@@ -103,6 +103,10 @@
 NTAPI
 RtlEnterHeapLock(IN OUT PHEAP_LOCK Lock, IN BOOLEAN Exclusive);
 
+BOOLEAN
+NTAPI
+RtlTryEnterHeapLock(IN OUT PHEAP_LOCK Lock, IN BOOLEAN Exclusive);
+
 NTSTATUS
 NTAPI
 RtlInitializeHeapLock(IN OUT PHEAP_LOCK *Lock);

Modified: trunk/reactos/ntoskrnl/rtl/libsupp.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/rtl/libsupp.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/rtl/libsupp.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/rtl/libsupp.c	[iso-8859-1] Fri Oct 24 19:05:54 2014
@@ -176,6 +176,24 @@
         ExAcquireResourceSharedLite(&Lock->Resource, TRUE);
 
     return STATUS_SUCCESS;
+}
+
+BOOLEAN
+NTAPI
+RtlTryEnterHeapLock(IN OUT PHEAP_LOCK Lock, IN BOOLEAN Exclusive)
+{
+    BOOLEAN Success;
+    KeEnterCriticalRegion();
+
+    if (Exclusive)
+        Success = ExAcquireResourceExclusiveLite(&Lock->Resource, FALSE);
+    else
+        Success = ExAcquireResourceSharedLite(&Lock->Resource, FALSE);
+
+    if (!Success)
+        KeLeaveCriticalRegion();
+
+    return Success;
 }
 
 NTSTATUS