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-rw-r--r--core/java/android/os/Debug.java21
-rw-r--r--core/jni/android_os_Debug.cpp42
2 files changed, 39 insertions, 24 deletions
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java
index 88ebdd5..2e77237 100644
--- a/core/java/android/os/Debug.java
+++ b/core/java/android/os/Debug.java
@@ -130,7 +130,7 @@ public final class Debug
public int otherSharedDirty;
/** @hide */
- public static final int NUM_OTHER_STATS = 9;
+ public static final int NUM_OTHER_STATS = 10;
private int[] otherStats = new int[NUM_OTHER_STATS*3];
@@ -177,15 +177,16 @@ public final class Debug
/* @hide */
public static String getOtherLabel(int which) {
switch (which) {
- case 0: return "Cursor";
- case 1: return "Ashmem";
- case 2: return "Other dev";
- case 3: return ".so mmap";
- case 4: return ".jar mmap";
- case 5: return ".apk mmap";
- case 6: return ".ttf mmap";
- case 7: return ".dex mmap";
- case 8: return "Other mmap";
+ case 0: return "Stack";
+ case 1: return "Cursor";
+ case 2: return "Ashmem";
+ case 3: return "Other dev";
+ case 4: return ".so mmap";
+ case 5: return ".jar mmap";
+ case 6: return ".apk mmap";
+ case 7: return ".ttf mmap";
+ case 8: return ".dex mmap";
+ case 9: return "Other mmap";
default: return "????";
}
}
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 6e21a11..2883c10 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -43,6 +43,7 @@ enum {
HEAP_UNKNOWN,
HEAP_DALVIK,
HEAP_NATIVE,
+ HEAP_STACK,
HEAP_CURSOR,
HEAP_ASHMEM,
HEAP_UNKNOWN_DEV,
@@ -109,7 +110,7 @@ static jlong android_os_Debug_getNativeHeapAllocatedSize(JNIEnv *env, jobject cl
static jlong android_os_Debug_getNativeHeapFreeSize(JNIEnv *env, jobject clazz)
{
-#ifdef HAVE_MALLOC_H
+#ifdef HAVE_MALLOC_H
struct mallinfo info = mallinfo();
return (jlong) info.fordblks;
#else
@@ -164,6 +165,8 @@ static void read_mapinfo(FILE *fp, stats_t* stats)
whichHeap = HEAP_NATIVE;
} else if (strstr(name, "/dev/ashmem/dalvik-") == name) {
whichHeap = HEAP_DALVIK;
+ } else if (strstr(name, "[stack") == name) {
+ whichHeap = HEAP_STACK;
} else if (strstr(name, "/dev/ashmem/CursorWindow") == name) {
whichHeap = HEAP_CURSOR;
} else if (strstr(name, "/dev/ashmem/") == name) {
@@ -191,7 +194,7 @@ static void read_mapinfo(FILE *fp, stats_t* stats)
//ALOGI("native=%d dalvik=%d sqlite=%d: %s\n", isNativeHeap, isDalvikHeap,
// isSqliteHeap, line);
-
+
while (true) {
if (fgets(line, 1024, fp) == 0) {
done = true;
@@ -233,7 +236,7 @@ static void load_maps(int pid, stats_t* stats)
{
char tmp[128];
FILE *fp;
-
+
sprintf(tmp, "/proc/%d/smaps", pid);
fp = fopen(tmp, "r");
if (fp == 0) return;
@@ -247,7 +250,7 @@ static void android_os_Debug_getDirtyPagesPid(JNIEnv *env, jobject clazz,
{
stats_t stats[_NUM_HEAP];
memset(&stats, 0, sizeof(stats));
-
+
load_maps(pid, stats);
for (int i=_NUM_CORE_HEAP; i<_NUM_HEAP; i++) {
@@ -261,9 +264,9 @@ static void android_os_Debug_getDirtyPagesPid(JNIEnv *env, jobject clazz,
env->SetIntField(object, stat_fields[i].privateDirty_field, stats[i].privateDirty);
env->SetIntField(object, stat_fields[i].sharedDirty_field, stats[i].sharedDirty);
}
-
+
jintArray otherIntArray = (jintArray)env->GetObjectField(object, otherStats_field);
-
+
jint* otherArray = (jint*)env->GetPrimitiveArrayCritical(otherIntArray, 0);
if (otherArray == NULL) {
return;
@@ -328,7 +331,7 @@ static jint read_binder_stat(const char* stat)
char compare[128];
int len = snprintf(compare, 128, "proc %d", getpid());
-
+
// loop until we have the block that represents this process
do {
if (fgets(line, 1024, fp) == 0) {
@@ -336,15 +339,15 @@ static jint read_binder_stat(const char* stat)
}
} while (strncmp(compare, line, len));
- // now that we have this process, read until we find the stat that we are looking for
+ // now that we have this process, read until we find the stat that we are looking for
len = snprintf(compare, 128, " %s: ", stat);
-
+
do {
if (fgets(line, 1024, fp) == 0) {
return -1;
}
} while (strncmp(compare, line, len));
-
+
// we have the line, now increment the line ptr to the value
char* ptr = line + len;
return atoi(ptr);
@@ -510,7 +513,7 @@ static void android_os_Debug_dumpNativeHeap(JNIEnv* env, jobject clazz,
jobject fileDescriptor)
{
if (fileDescriptor == NULL) {
- jniThrowNullPointerException(env, NULL);
+ jniThrowNullPointerException(env, "fd == null");
return;
}
int origFd = jniGetFDFromFileDescriptor(env, fileDescriptor);
@@ -547,7 +550,7 @@ static void android_os_Debug_dumpNativeBacktraceToFile(JNIEnv* env, jobject claz
jint pid, jstring fileName)
{
if (fileName == NULL) {
- jniThrowNullPointerException(env, NULL);
+ jniThrowNullPointerException(env, "file == null");
return;
}
const jchar* str = env->GetStringCritical(fileName, 0);
@@ -611,6 +614,19 @@ int register_android_os_Debug(JNIEnv *env)
{
jclass clazz = env->FindClass("android/os/Debug$MemoryInfo");
+ // Sanity check the number of other statistics expected in Java matches here.
+ jfieldID numOtherStats_field = env->GetStaticFieldID(clazz, "NUM_OTHER_STATS", "I");
+ jint numOtherStats = env->GetStaticIntField(clazz, numOtherStats_field);
+ int expectedNumOtherStats = _NUM_HEAP - _NUM_CORE_HEAP;
+ if (numOtherStats != expectedNumOtherStats) {
+ jniThrowExceptionFmt(env, "java/lang/RuntimeException",
+ "android.os.Debug.Meminfo.NUM_OTHER_STATS=%d expected %d",
+ numOtherStats, expectedNumOtherStats);
+ return JNI_ERR;
+ }
+
+ otherStats_field = env->GetFieldID(clazz, "otherStats", "[I");
+
for (int i=0; i<_NUM_CORE_HEAP; i++) {
stat_fields[i].pss_field =
env->GetFieldID(clazz, stat_field_names[i].pss_name, "I");
@@ -620,8 +636,6 @@ int register_android_os_Debug(JNIEnv *env)
env->GetFieldID(clazz, stat_field_names[i].sharedDirty_name, "I");
}
- otherStats_field = env->GetFieldID(clazz, "otherStats", "[I");
-
return jniRegisterNativeMethods(env, "android/os/Debug", gMethods, NELEM(gMethods));
}
generated by cgit v1.1 at 2025-08-17 23:26:54 +0000