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DroidFish: Implemented chmod using JNI. More efficient than starting a process.

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This commit is contained in:
Peter Osterlund 2012-05-12 17:31:50 +00:00
parent 94f9994fe6
commit 1ec674197c
3 changed files with 21 additions and 6 deletions
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17
DroidFish/jni/nativeutil.cpp
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@ -19,6 +19,7 @@
#include <jni.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
/*
* Class: org_petero_droidfish_engine_EngineUtil
@ -30,3 +31,19 @@ extern "C" JNIEXPORT jint JNICALL Java_org_petero_droidfish_engine_EngineUtil_ge
{
return sysconf(_SC_NPROCESSORS_ONLN);
}
/*
* Class: org_petero_droidfish_engine_EngineUtil
* Method: chmod
* Signature: (Ljava/lang/String;)Z
*/
extern "C" JNIEXPORT jboolean JNICALL Java_org_petero_droidfish_engine_EngineUtil_chmod
(JNIEnv *env, jclass, jstring jExePath)
{
const char* exePath = (*env).GetStringUTFChars(jExePath, NULL);
if (!exePath)
return false;
bool ret = chmod(exePath, 0744) == 0;
(*env).ReleaseStringUTFChars(jExePath, exePath);
return ret;
}

3
DroidFish/src/org/petero/droidfish/engine/EngineUtil.java
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@ -43,4 +43,7 @@ public class EngineUtil {
abi = "armeabi"; // Unknown ABI, assume original ARM
return "stockfish-" + abi;
}
/** Executes chmod 744 exePath. */
final static native boolean chmod(String exePath);
}

7
DroidFish/src/org/petero/droidfish/engine/ExternalEngine.java
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@ -240,12 +240,7 @@ public class ExternalEngine extends UCIEngineBase {
}
private final void chmod(String exePath) throws IOException {
Process proc = Runtime.getRuntime().exec(new String[]{"chmod", "744", exePath});
try {
proc.waitFor();
} catch (InterruptedException e) {
proc.destroy();
if (!EngineUtil.chmod(exePath))
throw new IOException("chmod failed");
}
}
}