Zebediah Figura : msi: Don't refcount the msi_custom_action_info struct.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b7f06accb05edd70239dbd7b04b956bf10456dee
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b7f06accb05edd70239dbd7b0...

Author: Zebediah Figura 
Date:   Thu Aug 16 10:34:39 2018 -0500

msi: Don't refcount the msi_custom_action_info struct.

This is unnecessary, and may have always been so. The struct will either be
freed after it completes synchronously, or after it has completed
asynchronously in ACTION_FinishCustomActions().

Signed-off-by: Zebediah Figura 
Signed-off-by: Hans Leidekker 
Signed-off-by: Alexandre Julliard

---

dlls/msi/custom.c | 46 ++++++++++++++--------------------------------
 1 file changed, 14 insertions(+), 32 deletions(-)

diff --git a/dlls/msi/custom.c b/dlls/msi/custom.c
index 9418b42..950681e 100644
--- a/dlls/msi/custom.c
+++ b/dlls/msi/custom.c
@@ -380,7 +380,6 @@ static UINT wait_process_handle(MSIPACKAGE* package, UINT type,

typedef struct _msi_custom_action_info {
     struct list entry;
-    LONG refs;
     MSIPACKAGE *package;
     LPWSTR source;
     LPWSTR target;
@@ -391,31 +390,22 @@ typedef struct _msi_custom_action_info {
     DWORD arch;
 } msi_custom_action_info;

-static void release_custom_action_data( msi_custom_action_info *info )
+static void free_custom_action_data( msi_custom_action_info *info )
 {
     EnterCriticalSection( &msi_custom_action_cs );

-    if (!--info->refs)
-    {
-        list_remove( &info->entry );
-        if (info->handle)
-            CloseHandle( info->handle );
-        msi_free( info->action );
-        msi_free( info->source );
-        msi_free( info->target );
-        msiobj_release( &info->package->hdr );
-        msi_free( info );
-    }
+    list_remove( &info->entry );
+    if (info->handle)
+        CloseHandle( info->handle );
+    msi_free( info->action );
+    msi_free( info->source );
+    msi_free( info->target );
+    msiobj_release( &info->package->hdr );
+    msi_free( info );

LeaveCriticalSection( &msi_custom_action_cs );
 }

-/* must be called inside msi_custom_action_cs if info is in the pending custom actions list */
-static void addref_custom_action_data( msi_custom_action_info *info )
-{
-    info->refs++;
- }
-
 static UINT wait_thread_handle( msi_custom_action_info *info )
 {
     UINT rc = ERROR_SUCCESS;
@@ -429,7 +419,7 @@ static UINT wait_thread_handle( msi_custom_action_info *info )
         if (!(info->type & msidbCustomActionTypeContinue))
             rc = custom_get_thread_return( info->package, info->handle );

-        release_custom_action_data( info );
+        free_custom_action_data( info );
     }
     else
     {
@@ -450,7 +440,6 @@ static msi_custom_action_info *find_action_by_guid( const GUID *guid )
     {
         if (IsEqualGUID( &info->guid, guid ))
         {
-            addref_custom_action_data( info );
             found = TRUE;
             break;
         }
@@ -725,7 +714,6 @@ static msi_custom_action_info *do_msidbCustomActionTypeDll(
         return NULL;

msiobj_addref( &package->hdr );
-    info->refs = 2; /* 1 for our caller and 1 for thread we created */
     info->package = package;
     info->type = type;
     info->target = strdupW( target );
@@ -767,9 +755,7 @@ static msi_custom_action_info *do_msidbCustomActionTypeDll(
     info->handle = CreateThread(NULL, 0, custom_client_thread, info, 0, NULL);
     if (!info->handle)
     {
-        /* release both references */
-        release_custom_action_data( info );
-        release_custom_action_data( info );
+        free_custom_action_data( info );
         return NULL;
     }

@@ -1056,7 +1042,6 @@ static DWORD ACTION_CallScript( const GUID *guid )
     else
         ERR("failed to create handle for %p\n", info->package );

-    release_custom_action_data( info );
     return r;
 }

@@ -1085,7 +1070,6 @@ static msi_custom_action_info *do_msidbCustomActionTypeScript(
         return NULL;

msiobj_addref( &package->hdr );
-    info->refs = 2; /* 1 for our caller and 1 for thread we created */
     info->package = package;
     info->type = type;
     info->target = strdupW( function );
@@ -1100,9 +1084,7 @@ static msi_custom_action_info *do_msidbCustomActionTypeScript(
     info->handle = CreateThread( NULL, 0, ScriptThread, &info->guid, 0, NULL );
     if (!info->handle)
     {
-        /* release both references */
-        release_custom_action_data( info );
-        release_custom_action_data( info );
+        free_custom_action_data( info );
         return NULL;
     }

@@ -1496,7 +1478,8 @@ void ACTION_FinishCustomActions(const MSIPACKAGE* package)
     EnterCriticalSection( &msi_custom_action_cs );
     LIST_FOR_EACH_ENTRY_SAFE( info, cursor, &msi_pending_custom_actions, msi_custom_action_info, entry )
     {
-        if (info->package == package) release_custom_action_data( info );
+        if (info->package == package)
+            free_custom_action_data( info );
     }
     LeaveCriticalSection( &msi_custom_action_cs );
 }
@@ -1514,6 +1497,5 @@ UINT __cdecl s_remote_GetActionInfo(const GUID *guid, int *type, LPWSTR *dll, LP
     *dll = strdupW(info->source);
     *func = strdupWtoA(info->target);

-    release_custom_action_data(info);
     return ERROR_SUCCESS;
 }