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am c738783c: Merge "Fix alarms with negative or very large wakup times." into froyo

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Merge commit 'c738783cc2b7b5bde1f0c25ed2cb4f9fd4df38cc' into froyo-plus-aosp

* commit 'c738783cc2b7b5bde1f0c25ed2cb4f9fd4df38cc':
  Fix alarms with negative or very large wakup times.
This commit is contained in:
Jeff Brown
2010-03-31 16:00:58 -07:00
committed by Android Git Automerger
parent e4fa5d7669 c738783cc2
commit 6a3e7dfa87
2 changed files with 19 additions and 12 deletions
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17
services/java/com/android/server/AlarmManagerService.java
View File

@@ -400,7 +400,7 @@ class AlarmManagerService extends IAlarmManager.Stub {
}
public long timeToNextAlarm() {
long nextAlarm = 0xfffffffffffffffl;
long nextAlarm = Long.MAX_VALUE;
synchronized (mLock) {
for (int i=AlarmManager.RTC_WAKEUP;
i<=AlarmManager.ELAPSED_REALTIME; i++) {
@@ -420,7 +420,18 @@ class AlarmManagerService extends IAlarmManager.Stub {
{
if (mDescriptor != -1)
{
set(mDescriptor, alarm.type, (alarm.when * 1000 * 1000));
// The kernel never triggers alarms with negative wakeup times
// so we ensure they are positive.
long alarmSeconds, alarmNanoseconds;
if (alarm.when < 0) {
alarmSeconds = 0;
alarmNanoseconds = 0;
} else {
alarmSeconds = alarm.when / 1000;
alarmNanoseconds = (alarm.when % 1000) * 1000 * 1000;
}
set(mDescriptor, alarm.type, alarmSeconds, alarmNanoseconds);
}
else
{
@@ -499,7 +510,7 @@ class AlarmManagerService extends IAlarmManager.Stub {
private native int init();
private native void close(int fd);
private native void set(int fd, int type, long nanoseconds);
private native void set(int fd, int type, long seconds, long nanoseconds);
private native int waitForAlarm(int fd);
private native int setKernelTimezone(int fd, int minuteswest);

14
services/jni/com_android_server_AlarmManagerService.cpp
View File

@@ -38,10 +38,6 @@
#include <linux/android_alarm.h>
#endif
#define ONE_NANOSECOND 1000000000LL
#define NANOSECONDS_TO_SECONDS(x) (x / ONE_NANOSECOND)
#define SECONDS_TO_NANOSECONDS(x) (x * ONE_NANOSECOND)
namespace android {
static jint android_server_AlarmManagerService_setKernelTimezone(JNIEnv* env, jobject obj, jint fd, jint minswest)
@@ -82,17 +78,17 @@ static void android_server_AlarmManagerService_close(JNIEnv* env, jobject obj, j
#endif
}
static void android_server_AlarmManagerService_set(JNIEnv* env, jobject obj, jint fd, jint type, jlong nanoseconds)
static void android_server_AlarmManagerService_set(JNIEnv* env, jobject obj, jint fd, jint type, jlong seconds, jlong nanoseconds)
{
#if HAVE_ANDROID_OS
struct timespec ts;
ts.tv_sec = NANOSECONDS_TO_SECONDS(nanoseconds);
ts.tv_nsec = nanoseconds - SECONDS_TO_NANOSECONDS(ts.tv_sec);
ts.tv_sec = seconds;
ts.tv_nsec = nanoseconds;
int result = ioctl(fd, ANDROID_ALARM_SET(type), &ts);
if (result < 0)
{
LOGE("Unable to set alarm to %lld: %s\n", nanoseconds, strerror(errno));
LOGE("Unable to set alarm to %lld.%09lld: %s\n", seconds, nanoseconds, strerror(errno));
}
#endif
}
@@ -121,7 +117,7 @@ static JNINativeMethod sMethods[] = {
/* name, signature, funcPtr */
{"init", "()I", (void*)android_server_AlarmManagerService_init},
{"close", "(I)V", (void*)android_server_AlarmManagerService_close},
{"set", "(IIJ)V", (void*)android_server_AlarmManagerService_set},
{"set", "(IIJJ)V", (void*)android_server_AlarmManagerService_set},
{"waitForAlarm", "(I)I", (void*)android_server_AlarmManagerService_waitForAlarm},
{"setKernelTimezone", "(II)I", (void*)android_server_AlarmManagerService_setKernelTimezone},
};