Split the modal queue stuff into its own files.

4 files changed, 65 insertions, 78 deletions

diff --git a/redo/modalqueue.c b/redo/modalqueue.c
new file mode 100644
index 0000000..7474c95
--- /dev/null
+++ b/redo/modalqueue.c
@@ -0,0 +1,48 @@
+// 19 august 2014
+
+#include <stdlib.h>
+#include "modalqueue.h"
+
+static struct {
+	int inmodal;
+	void **queue;
+	size_t len;
+	size_t cap;
+} mq = { 0, NULL, 0, 0 };
+
+void beginModal(void)
+{
+	mq.inmodal = 1;
+	if (mq.queue == NULL) {
+		mq.cap = 128;
+		mq.queue = (void **) malloc(mq.cap * sizeof (void *));
+		if (mq.queue == NULL)
+			abort();//TODO
+		mq.len = 0;
+	}
+}
+
+void endModal(void)
+{
+	size_t i;
+
+	mq.inmodal = 0;
+	for (i = 0; i < mq.len; i++)
+		doissue(mq.queue[i]);
+	mq.len = 0;
+}
+
+int queueIfModal(void *what)
+{
+	if (!mq.inmodal)
+		return 0;
+	mq.queue[mq.len] = what;
+	mq.len++;
+	if (mq.len >= mq.cap) {
+		mq.cap *= 2;
+		mq.queue = (void **) realloc(mq.queue, mq.cap * sizeof (void *));
+		if (mq.queue == NULL)
+			abort();//TODO
+	}
+	return 1;
+}
diff --git a/redo/modalqueue.h b/redo/modalqueue.h
new file mode 100644
index 0000000..912ba32
--- /dev/null
+++ b/redo/modalqueue.h
@@ -0,0 +1,8 @@
+/* 19 august 2014 */
+
+extern void beginModal(void);
+extern void endModal(void);
+extern int queueIfModal(void *);
+
+/* needed by the above */
+extern void doissue(void *);
diff --git a/redo/uitask_darwin.m b/redo/uitask_darwin.m
index 9d25a61..86de4ce 100644
--- a/redo/uitask_darwin.m
+++ b/redo/uitask_darwin.m
@@ -2,6 +2,7 @@
 
 #import "objc_darwin.h"
 #import "_cgo_export.h"
+#import "modalqueue.h"
 #import <Cocoa/Cocoa.h>
 
 #define toNSWindow(x) ((NSWindow *) (x))
@@ -129,48 +130,13 @@ void uistop(void)
 	[NSApp postEvent:e atStart:NO];		// let pending events take priority
 }
 
-// because dispatch_suspend()/dispatch_resume() can't be used with the main queue
-static BOOL inmodal = NO;
-static void **modalqueue = NULL;
-static size_t mqlen = 0;
-static size_t mqcap = 0;
-
-void beginModal(void)
-{
-	inmodal = YES;
-	if (modalqueue == NULL) {
-		mqcap = 128;
-		modalqueue = (void **) malloc(mqcap * sizeof (void *));
-		if (modalqueue == NULL)
-			abort();//TODO
-		mqlen = 0;
-	}
-}
-
-void endModal(void)
-{
-	size_t i;
-
-	inmodal = NO;
-	for (i = 0; i < mqlen; i++)
-		doissue(modalqueue[i]);
-	mqlen = 0;
-}
+// we use the modal queue because dispatch_suspend()/dispatch_resume() can't be used with the main queue
 
 // thanks to mikeash in irc.freenode.net/#macdev for suggesting the use of Grand Central Dispatch and blocks for this
 void issue(void *what)
 {
-	if (inmodal) {
-		modalqueue[mqlen] = what;
-		mqlen++;
-		if (mqlen >= mqcap) {
-			mqcap *= 2;
-			modalqueue = (void **) realloc(modalqueue, mqcap * sizeof (void *));
-			if (modalqueue == NULL)
-				abort();//TODO
-		}
+	if (queueIfModal(what))
 		return;
-	}
 	dispatch_async(dispatch_get_main_queue(), ^{
 		doissue(what);
 	});
diff --git a/redo/uitask_windows.c b/redo/uitask_windows.c
index 3732270..ac8141b 100644
--- a/redo/uitask_windows.c
+++ b/redo/uitask_windows.c
@@ -2,6 +2,7 @@
 
 #include "winapi_windows.h"
 #include "_cgo_export.h"
+#include "modalqueue.h"
 
 // note that this includes the terminating '\0'
 // this also assumes WC_TABCONTROL is longer than areaWindowClass
@@ -71,13 +72,6 @@ HWND msgwin;
 
 #define msgwinclass L"gouimsgwin"
 
-struct modalqueue {
-	BOOL inmodal;
-	void **modals;
-	size_t len;
-	size_t cap;
-};
-
 static BOOL CALLBACK beginEndModalAll(HWND hwnd, LPARAM lParam)
 {
 	if (hwnd != msgwin)
@@ -88,24 +82,8 @@ static BOOL CALLBACK beginEndModalAll(HWND hwnd, LPARAM lParam)
 static LRESULT CALLBACK msgwinproc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
 	LRESULT shared;
-	struct modalqueue *mq;
 	size_t i;
 
-	mq = (struct modalqueue *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
-	if (mq == NULL) {
-		mq = (struct modalqueue *) malloc(sizeof (struct modalqueue));
-		if (mq == NULL)
-			xpanic("error allocating modal queue structure", GetLastError());
-		ZeroMemory(mq, sizeof (struct modalqueue));
-		mq->inmodal = FALSE;
-		mq->len = 0;
-		mq->cap = 128;
-		mq->modals = (void **) malloc(mq->cap * sizeof (void *));
-		if (mq->modals == NULL)
-			xpanic("error allocating modal quque", GetLastError());
-		SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) mq);
-	}
-
 	if (sharedWndProc(hwnd, uMsg, wParam, lParam, &shared))
 		return shared;
 	switch (uMsg) {
@@ -116,29 +94,16 @@ static LRESULT CALLBACK msgwinproc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM l
 	// TODO respond to WM_THEMECHANGED
 	case msgRequest:
 		// in modal?
-		if (mq->inmodal) {
-			mq->modals[mq->len] = (void *) lParam;
-			mq->len++;
-			if (mq->len >= mq->cap) {
-				mq->cap *= 2;
-				mq->modals = (void **) realloc(mq->modals, mq->cap * sizeof (void *));
-				if (mq->modals == NULL)
-					xpanic("error growing modal queue", GetLastError());
-			}
-			return;
-		}
-		// nope, we can run now
-		doissue((void *) lParam);
+		if (!queueIfModal((void *) lParam))
+			// nope, we can run now
+			doissue((void *) lParam);
 		return 0;
 	case msgBeginModal:
-		mq->inmodal = TRUE;
+		beginModal();
 		EnumThreadWindows(GetCurrentThreadId(), beginEndModalAll, msgBeginModal);
 		return 0;
 	case msgEndModal:
-		mq->inmodal = FALSE;
-		for (i = 0; i < mq->len; i++)
-			doissue(mq->modals[i]);
-		mq->len = 0;
+		endModal();
 		EnumThreadWindows(GetCurrentThreadId(), beginEndModalAll, msgEndModal);
 		return 0;
 	default: