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Commit b63de6de authored by buzbee's avatar buzbee
Browse files

Process new system property for max JIT cache size 

To allow low-memory devices to reduce (or eliminate entirely)
the RAM used by the JIT, dalvikvm has a new command-line
option to set the max size of the JIT's translation cache.
In this CL, we pass that new option based on a system property.

Change-Id: I2a01da4d19c1922b6ed52791ee513efef9caf3d4
parent dadfb9c9

core/jni/AndroidRuntime.cpp

+9 −0
Original line number Diff line number Diff line
@@ -460,6 +460,7 @@ int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv) 
    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];

    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];

    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];

    char jitcodecachesizeOptsBuf[sizeof("-Xjitcodecachesize:")-1 + PROPERTY_VALUE_MAX];

    char extraOptsBuf[PROPERTY_VALUE_MAX];

    char* stackTraceFile = NULL;

    bool checkJni = false;
@@ -551,6 +552,14 @@ int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv) 
    opt.optionString = "-XX:mainThreadStackSize=24K";

    mOptions.add(opt);



    // Set the max jit code cache size.  Note: size of 0 will disable the JIT.

    strcpy(jitcodecachesizeOptsBuf, "-Xjitcodecachesize:");

    property_get("dalvik.vm.jit.codecachesize", jitcodecachesizeOptsBuf+19,  NULL);

    if (jitcodecachesizeOptsBuf[19] != '\0') {

      opt.optionString = jitcodecachesizeOptsBuf;

      mOptions.add(opt);

    }



    strcpy(heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");

    property_get("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf+20, "");

    if (heapgrowthlimitOptsBuf[20] != '\0') {