AssetManager cookies should be int32_t and not void*.

Cookies are really indices into vectors and arrays, so
they don't need to be void*. We choose int32_t instead
of size_t to allow their width to be well specified.

(cherry picked from commit ebfdd0f467e39c3af8d92cade78263935340acb7)
(cherry picked from commit a7fa2e592e2e579e5acdb903dba83fc074ebc215)
(cherry picked from commit a9d5701b034ed2d9771b3f0943e1add00741d7cd)

Change-Id: I2aed3db568b6fdc487bf99e2c5dd123206736fda

1 files changed, 12 insertions, 13 deletions

diff --git a/libs/androidfw/AssetManager.cpp b/libs/androidfw/AssetManager.cpp
index 503c030..52ab361 100644
--- a/libs/androidfw/AssetManager.cpp
+++ b/libs/androidfw/AssetManager.cpp
@@ -165,7 +165,7 @@ AssetManager::~AssetManager(void)
     delete[] mVendor;
 }
 
-bool AssetManager::addAssetPath(const String8& path, void** cookie)
+bool AssetManager::addAssetPath(const String8& path, int32_t* cookie)
 {
     AutoMutex _l(mLock);
 
@@ -192,7 +192,7 @@ bool AssetManager::addAssetPath(const String8& path, void** cookie)
     for (size_t i=0; i<mAssetPaths.size(); i++) {
         if (mAssetPaths[i].path == ap.path) {
             if (cookie) {
-                *cookie = (void*)(i+1);
+                *cookie = static_cast<int32_t>(i+1);
             }
             return true;
         }
@@ -205,7 +205,7 @@ bool AssetManager::addAssetPath(const String8& path, void** cookie)
 
     // new paths are always added at the end
     if (cookie) {
-        *cookie = (void*)mAssetPaths.size();
+        *cookie = static_cast<int32_t>(mAssetPaths.size());
     }
 
     // add overlay packages for /system/framework; apps are handled by the
@@ -395,17 +395,17 @@ bool AssetManager::addDefaultAssets()
     return addAssetPath(path, NULL);
 }
 
-void* AssetManager::nextAssetPath(void* cookie) const
+int32_t AssetManager::nextAssetPath(const int32_t cookie) const
 {
     AutoMutex _l(mLock);
-    size_t next = ((size_t)cookie)+1;
-    return next > mAssetPaths.size() ? NULL : (void*)next;
+    const size_t next = static_cast<size_t>(cookie) + 1;
+    return next > mAssetPaths.size() ? -1 : next;
 }
 
-String8 AssetManager::getAssetPath(void* cookie) const
+String8 AssetManager::getAssetPath(const int32_t cookie) const
 {
     AutoMutex _l(mLock);
-    const size_t which = ((size_t)cookie)-1;
+    const size_t which = static_cast<size_t>(cookie) - 1;
     if (which < mAssetPaths.size()) {
         return mAssetPaths[which].path;
     }
@@ -575,15 +575,14 @@ Asset* AssetManager::openNonAsset(const char* fileName, AccessMode mode)
     return NULL;
 }
 
-Asset* AssetManager::openNonAsset(void* cookie, const char* fileName, AccessMode mode)
+Asset* AssetManager::openNonAsset(const int32_t cookie, const char* fileName, AccessMode mode)
 {
-    const size_t which = ((size_t)cookie)-1;
+    const size_t which = static_cast<size_t>(cookie) - 1;
 
     AutoMutex _l(mLock);
 
     LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
 
-
     if (mCacheMode != CACHE_OFF && !mCacheValid)
         loadFileNameCacheLocked();
 
@@ -1206,7 +1205,7 @@ AssetDir* AssetManager::openDir(const char* dirName)
  *
  * Pass in "" for the root dir.
  */
-AssetDir* AssetManager::openNonAssetDir(void* cookie, const char* dirName)
+AssetDir* AssetManager::openNonAssetDir(const int32_t cookie, const char* dirName)
 {
     AutoMutex _l(mLock);
 
@@ -1225,7 +1224,7 @@ AssetDir* AssetManager::openNonAssetDir(void* cookie, const char* dirName)
 
     pMergedInfo = new SortedVector<AssetDir::FileInfo>;
 
-    const size_t which = ((size_t)cookie)-1;
+    const size_t which = static_cast<size_t>(cookie) - 1;
 
     if (which < mAssetPaths.size()) {
         const asset_path& ap = mAssetPaths.itemAt(which);