From b892e3dd1bc531bd0b53fd8999454a658f18e715 Mon Sep 17 00:00:00 2001
From: suke <suke@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 2 Jul 2008 15:35:04 +0000
Subject: * ext/win32ole/win32ole.c: avoid creating Ruby object during   GC.
 thanks to arton <artonx AT yahoo.co.jp>. [ruby-dev:35313]

* test/win32ole/test_win32ole_event.rb: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17821 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/win32ole/win32ole.c | 115 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 114 insertions(+), 1 deletion(-)

(limited to 'ext/win32ole/win32ole.c')

diff --git a/ext/win32ole/win32ole.c b/ext/win32ole/win32ole.c
index 7fd9181405..1a63edadfd 100644
--- a/ext/win32ole/win32ole.c
+++ b/ext/win32ole/win32ole.c
@@ -31,6 +31,7 @@
 #include <varargs.h>
 #define va_init_list(a,b) va_start(a)
 #endif
+#include <objidl.h>
 
 #define DOUT fprintf(stderr,"[%d]\n",__LINE__)
 #define DOUTS(x) fprintf(stderr,"[%d]:" #x "=%s\n",__LINE__,x)
@@ -116,7 +117,7 @@
 
 #define WC2VSTR(x) ole_wc2vstr((x), TRUE)
 
-#define WIN32OLE_VERSION "1.1.7"
+#define WIN32OLE_VERSION "1.1.8"
 
 typedef HRESULT (STDAPICALLTYPE FNCOCREATEINSTANCEEX)
     (REFCLSID, IUnknown*, DWORD, COSERVERINFO*, DWORD, MULTI_QI*);
@@ -202,6 +203,9 @@ static UINT g_cp_to_check = CP_ACP;
 static char g_lcid_to_check[8 + 1];
 static VARTYPE g_nil_to = VT_ERROR;
 static st_table *enc2cp_table;
+static IMessageFilterVtbl message_filter;
+static IMessageFilter imessage_filter = { &message_filter };
+static IMessageFilter* previous_filter;
 
 struct oledata {
     IDispatch *pDispatch;
@@ -523,6 +527,101 @@ static VALUE folevariant_set_value(VALUE self, VALUE val);
 static void init_enc2cp();
 static void free_enc2cp();
   
+static HRESULT (STDMETHODCALLTYPE mf_QueryInterface)(
+    IMessageFilter __RPC_FAR * This,
+    /* [in] */ REFIID riid,
+    /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject)
+{
+    if (MEMCMP(riid, &IID_IUnknown, GUID, 1) == 0
+        || MEMCMP(riid, &IID_IMessageFilter, GUID, 1) == 0)
+    {
+        *ppvObject = &message_filter;
+        return S_OK;
+    }
+    return E_NOINTERFACE;
+}
+
+static ULONG (STDMETHODCALLTYPE mf_AddRef)( 
+    IMessageFilter __RPC_FAR * This)
+{
+    return 1;
+}
+        
+static ULONG (STDMETHODCALLTYPE mf_Release)( 
+    IMessageFilter __RPC_FAR * This)
+{
+    return 1;
+}
+
+static DWORD (STDMETHODCALLTYPE mf_HandleInComingCall)(
+    IMessageFilter __RPC_FAR * pThis,
+    DWORD dwCallType,      //Type of incoming call
+    HTASK threadIDCaller,  //Task handle calling this task
+    DWORD dwTickCount,     //Elapsed tick count
+    LPINTERFACEINFO lpInterfaceInfo //Pointer to INTERFACEINFO structure
+    )
+{
+#ifdef DEBUG_MESSAGEFILTER
+    printf("incoming %08X, %08X, %d\n", dwCallType, threadIDCaller, dwTickCount);
+    fflush(stdout);
+#endif
+    switch (dwCallType)
+    {
+    case CALLTYPE_ASYNC:
+    case CALLTYPE_TOPLEVEL_CALLPENDING:
+    case CALLTYPE_ASYNC_CALLPENDING:
+        if (rb_during_gc()) {
+            return SERVERCALL_RETRYLATER;
+        }
+        break;
+    default:
+        break;
+    }
+    if (previous_filter) {
+        return previous_filter->lpVtbl->HandleInComingCall(previous_filter,
+                                                   dwCallType,
+                                                   threadIDCaller,
+                                                   dwTickCount,
+                                                   lpInterfaceInfo);
+    }
+    return SERVERCALL_ISHANDLED;
+}
+
+static DWORD (STDMETHODCALLTYPE mf_RetryRejectedCall)(
+    IMessageFilter* pThis,
+    HTASK threadIDCallee,  //Server task handle
+    DWORD dwTickCount,     //Elapsed tick count
+    DWORD dwRejectType     //Returned rejection message
+    )
+{
+    if (previous_filter) {
+        return previous_filter->lpVtbl->RetryRejectedCall(previous_filter,
+                                                  threadIDCallee,
+                                                  dwTickCount,
+                                                  dwRejectType);
+    }
+    return 1000;
+}
+
+static DWORD (STDMETHODCALLTYPE mf_MessagePending)(
+    IMessageFilter* pThis,
+    HTASK threadIDCallee,  //Called applications task handle
+    DWORD dwTickCount,     //Elapsed tick count
+    DWORD dwPendingType    //Call type
+    )
+{
+    if (rb_during_gc()) {
+        return PENDINGMSG_WAITNOPROCESS;
+    }
+    if (previous_filter) {
+        return previous_filter->lpVtbl->MessagePending(previous_filter,
+                                               threadIDCallee,
+                                               dwTickCount,
+                                               dwPendingType);
+    }
+    return PENDINGMSG_WAITNOPROCESS;
+}
+    
 typedef struct _Win32OLEIDispatch
 {
     IDispatch dispatch;
@@ -1059,6 +1158,11 @@ ole_initialize()
         /*
         atexit((void (*)(void))ole_uninitialize);
         */
+        hr = CoRegisterMessageFilter(&imessage_filter, &previous_filter);
+        if(FAILED(hr)) {
+            previous_filter = NULL;
+            ole_raise(hr, rb_eRuntimeError, "fail: install OLE MessageFilter");
+        }
     }
 }
 
@@ -8168,6 +8272,15 @@ Init_win32ole()
     com_vtbl.GetTypeInfo = GetTypeInfo;
     com_vtbl.GetIDsOfNames = GetIDsOfNames;
     com_vtbl.Invoke = Invoke;
+
+    message_filter.QueryInterface = mf_QueryInterface;
+    message_filter.AddRef = mf_AddRef;
+    message_filter.Release = mf_Release;
+    message_filter.HandleInComingCall = mf_HandleInComingCall;
+    message_filter.RetryRejectedCall = mf_RetryRejectedCall;
+    message_filter.MessagePending = mf_MessagePending;
+ 
+    com_hash = Data_Wrap_Struct(rb_cData, rb_mark_hash, st_free_table, st_init_numtable());
     com_hash = Data_Wrap_Struct(rb_cData, rb_mark_hash, st_free_table, st_init_numtable());
     rb_register_mark_object(com_hash);
 
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