[PATCH v2 5/6] msvcr100: Make ExternalContextBase reference-counted.

[Torge Matthies]

From: Torge Matthies

Signed-off-by: Torge Matthies 
---
 dlls/msvcrt/concurrency.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/msvcrt/concurrency.c b/dlls/msvcrt/concurrency.c
index 08a56bf11d7..615b2bef4a1 100644
--- a/dlls/msvcrt/concurrency.c
+++ b/dlls/msvcrt/concurrency.c
@@ -91,6 +91,7 @@ struct scheduler_list {

typedef struct {
     Context context;
+    LONG refcount;
     struct scheduler_list scheduler;
     unsigned int id;
     union allocator_cache_entry *allocator_cache[8];
@@ -848,6 +849,11 @@ static void ExternalContextBase_dtor(ExternalContextBase *this)
     union allocator_cache_entry *next, *cur;
     int i;

+    if (InterlockedDecrement(&this->refcount)) {
+        TRACE("skipping dtor: refcount not zero\n");
+        return;
+    }
+
     /* TODO: move the allocator cache to scheduler so it can be reused */
     for(i=0; i<ARRAY_SIZE(this->allocator_cache); i++) {
         for(cur = this->allocator_cache[i]; cur; cur=next) {
@@ -893,6 +899,7 @@ static void ExternalContextBase_ctor(ExternalContextBase *this)

memset(this, 0, sizeof(*this));
     this->context.vtable = &ExternalContextBase_vtable;
+    this->refcount = 1;
     this->id = InterlockedIncrement(&context_id);

create_default_scheduler();