Provide BreakpadGetCrashReportCount() and -[BreakpadController

getCrashReportCount:]

This provides the ability for clients to query the number of crash reports
that are waiting to upload.

Patch by KiYun Roe <kiyun@chromium.org>

BUG=547

Review URL: https://breakpad.appspot.com/714002/


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1234 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/ios/Breakpad.h

@@ -196,8 +196,8 @@ void BreakpadRemoveUploadParameter(BreakpadRef ref, NSString *key);
 
 // Method to handle uploading data to the server
 
-// Returns if there is some report to send to the server.
+// Returns the number of crash reports waiting to send to the server.
-bool BreakpadHasCrashReportToUpload(BreakpadRef ref);
+int BreakpadGetCrashReportCount(BreakpadRef ref);
 
 // Upload next report to the server.
 void BreakpadUploadNextReport(BreakpadRef ref);

src/client/ios/Breakpad.mm

@@ -162,6 +162,7 @@ class Breakpad {
   void SetKeyValue(NSString *key, NSString *value);
   NSString *KeyValue(NSString *key);
   void RemoveKeyValue(NSString *key);
+  NSArray *CrashReportsToUpload();
   NSString *NextCrashReportToUpload();
   void UploadNextReport();
   void UploadData(NSData *data, NSString *name,
@@ -440,7 +441,7 @@ void Breakpad::RemoveKeyValue(NSString *key) {
 }
 
 //=============================================================================
-NSString *Breakpad::NextCrashReportToUpload() {
+NSArray *Breakpad::CrashReportsToUpload() {
   NSString *directory = KeyValue(@BREAKPAD_DUMP_DIRECTORY);
   if (!directory)
     return nil;
@@ -448,7 +449,15 @@ NSString *Breakpad::NextCrashReportToUpload() {
       contentsOfDirectoryAtPath:directory error:nil];
   NSArray *configs = [dirContents filteredArrayUsingPredicate:[NSPredicate
       predicateWithFormat:@"self BEGINSWITH 'Config-'"]];
-  NSString *config = [configs lastObject];
+  return configs;
+}
+
+//=============================================================================
+NSString *Breakpad::NextCrashReportToUpload() {
+  NSString *directory = KeyValue(@BREAKPAD_DUMP_DIRECTORY);
+  if (!directory)
+    return nil;
+  NSString *config = [CrashReportsToUpload() lastObject];
   if (!config)
     return nil;
   return [NSString stringWithFormat:@"%@/%@", directory, config];
@@ -779,16 +788,16 @@ void BreakpadRemoveKeyValue(BreakpadRef ref, NSString *key) {
 }
 
 //=============================================================================
-bool BreakpadHasCrashReportToUpload(BreakpadRef ref) {
+int BreakpadGetCrashReportCount(BreakpadRef ref) {
   try {
     // Not called at exception time
     Breakpad *breakpad = (Breakpad *)ref;
 
     if (breakpad) {
-       return breakpad->NextCrashReportToUpload() != 0;
+       return [breakpad->CrashReportsToUpload() count];
     }
   } catch(...) {    // don't let exceptions leave this C API
-    fprintf(stderr, "BreakpadHasCrashReportToUpload() : error\n");
+    fprintf(stderr, "BreakpadGetCrashReportCount() : error\n");
   }
   return false;
 }

src/client/ios/BreakpadController.h

@@ -108,6 +108,9 @@
 // Check if there is currently a crash report to upload.
 - (void)hasReportToUpload:(void(^)(BOOL))callback;
 
+// Get the number of crash reports waiting to upload.
+- (void)getCrashReportCount:(void(^)(int))callback;
+
 @end
 
 #endif  // CLIENT_IOS_HANDLER_IOS_BREAKPAD_CONTROLLER_H_

src/client/ios/BreakpadController.mm

@@ -232,7 +232,15 @@ NSString* GetPlatform() {
   NSAssert(started_, @"The controller must be started before "
                      "hasReportToUpload is called");
   dispatch_async(queue_, ^{
-      callback(breakpadRef_ && BreakpadHasCrashReportToUpload(breakpadRef_));
+      callback(breakpadRef_ && (BreakpadGetCrashReportCount(breakpadRef_) > 0));
+  });
+}
+
+- (void)getCrashReportCount:(void(^)(int))callback {
+  NSAssert(started_, @"The controller must be started before "
+                     "getCrashReportCount is called");
+  dispatch_async(queue_, ^{
+      callback(breakpadRef_ ? BreakpadGetCrashReportCount(breakpadRef_) : 0);
   });
 }
 
@@ -264,7 +272,7 @@ NSString* GetPlatform() {
 
 - (void)sendStoredCrashReports {
   dispatch_async(queue_, ^{
-      if (!BreakpadHasCrashReportToUpload(breakpadRef_))
+      if (BreakpadGetCrashReportCount(breakpadRef_) == 0)
         return;
 
       int timeToWait = [self sendDelay];
@@ -279,7 +287,7 @@ NSString* GetPlatform() {
         BreakpadUploadNextReport(breakpadRef_);
 
         // If more reports must be sent, make sure this method is called again.
-        if (BreakpadHasCrashReportToUpload(breakpadRef_))
+        if (BreakpadGetCrashReportCount(breakpadRef_) > 0)
           timeToWait = uploadIntervalInSeconds_;
       }