Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/prims/jniCheck.cpp
src/share/vm/prims/jniCheck.cpp
- changeset 2331
- 017cd8bce8a8
- parent 2314
- f95d63e2154a
- child 2497
- 3582bf76420e
equal
deleted
inserted
replaced
| 2330:684faacebf20 | 2331:017cd8bce8a8 |
|---|---|
| 1286 jsize result = UNCHECKED()->GetStringLength(env,str); | 1286 jsize result = UNCHECKED()->GetStringLength(env,str); |
| 1287 functionExit(env); | 1287 functionExit(env); |
| 1288 return result; | 1288 return result; |
| 1289 JNI_END | 1289 JNI_END |
| 1290 | 1290 |
| 1291 // Arbitrary (but well-known) tag | |
| 1292 const jint STRING_TAG = 0x47114711; | |
| 1293 | |
| 1291 JNI_ENTRY_CHECKED(const jchar *, | 1294 JNI_ENTRY_CHECKED(const jchar *, |
| 1292 checked_jni_GetStringChars(JNIEnv *env, | 1295 checked_jni_GetStringChars(JNIEnv *env, |
| 1293 jstring str, | 1296 jstring str, |
| 1294 jboolean *isCopy)) | 1297 jboolean *isCopy)) |
| 1295 functionEnter(thr); | 1298 functionEnter(thr); |
| 1296 IN_VM( | 1299 IN_VM( |
| 1297 checkString(thr, str); | 1300 checkString(thr, str); |
| 1298 ) | 1301 ) |
| 1299 const jchar *result = UNCHECKED()->GetStringChars(env,str,isCopy); | 1302 const jchar *result = UNCHECKED()->GetStringChars(env,str,isCopy); |
| 1300 functionExit(env); | 1303 assert (isCopy == NULL || *isCopy == JNI_TRUE, "GetStringChars didn't return a copy as expected"); |
| 1301 return result; | 1304 |
| 1305 size_t len = UNCHECKED()->GetStringLength(env,str) + 1; // + 1 for NULL termination | |
| 1306 jint* tagLocation = (jint*) AllocateHeap(len * sizeof(jchar) + sizeof(jint), "checked_jni_GetStringChars"); | |
| 1307 *tagLocation = STRING_TAG; | |
| 1308 jchar* newResult = (jchar*) (tagLocation + 1); | |
| 1309 memcpy(newResult, result, len * sizeof(jchar)); | |
| 1310 // Avoiding call to UNCHECKED()->ReleaseStringChars() since that will fire unexpected dtrace probes | |
| 1311 // Note that the dtrace arguments for the allocated memory will not match up with this solution. | |
| 1312 FreeHeap((char*)result); | |
| 1313 | |
| 1314 functionExit(env); | |
| 1315 return newResult; | |
| 1302 JNI_END | 1316 JNI_END |
| 1303 | 1317 |
| 1304 JNI_ENTRY_CHECKED(void, | 1318 JNI_ENTRY_CHECKED(void, |
| 1305 checked_jni_ReleaseStringChars(JNIEnv *env, | 1319 checked_jni_ReleaseStringChars(JNIEnv *env, |
| 1306 jstring str, | 1320 jstring str, |
| 1307 const jchar *chars)) | 1321 const jchar *chars)) |
| 1308 functionEnterExceptionAllowed(thr); | 1322 functionEnterExceptionAllowed(thr); |
| 1309 IN_VM( | 1323 IN_VM( |
| 1310 checkString(thr, str); | 1324 checkString(thr, str); |
| 1311 ) | 1325 ) |
| 1312 /* cannot check validity of copy, unless every request is logged by | 1326 if (chars == NULL) { |
| 1313 * checking code. Implementation of this check is deferred until a | 1327 // still do the unchecked call to allow dtrace probes |
| 1314 * subsequent release. | 1328 UNCHECKED()->ReleaseStringChars(env,str,chars); |
| 1315 */ | 1329 } |
| 1316 UNCHECKED()->ReleaseStringChars(env,str,chars); | 1330 else { |
| 1331 jint* tagLocation = ((jint*) chars) - 1; | |
| 1332 if (*tagLocation != STRING_TAG) { | |
| 1333 NativeReportJNIFatalError(thr, "ReleaseStringChars called on something not allocated by GetStringChars"); | |
| 1334 } | |
| 1335 UNCHECKED()->ReleaseStringChars(env,str,(const jchar*)tagLocation); | |
| 1336 } | |
| 1317 functionExit(env); | 1337 functionExit(env); |
| 1318 JNI_END | 1338 JNI_END |
| 1319 | 1339 |
| 1320 JNI_ENTRY_CHECKED(jstring, | 1340 JNI_ENTRY_CHECKED(jstring, |
| 1321 checked_jni_NewStringUTF(JNIEnv *env, | 1341 checked_jni_NewStringUTF(JNIEnv *env, |
| 1335 ) | 1355 ) |
| 1336 jsize result = UNCHECKED()->GetStringUTFLength(env,str); | 1356 jsize result = UNCHECKED()->GetStringUTFLength(env,str); |
| 1337 functionExit(env); | 1357 functionExit(env); |
| 1338 return result; | 1358 return result; |
| 1339 JNI_END | 1359 JNI_END |
| 1360 | |
| 1361 // Arbitrary (but well-known) tag - different than GetStringChars | |
| 1362 const jint STRING_UTF_TAG = 0x48124812; | |
| 1340 | 1363 |
| 1341 JNI_ENTRY_CHECKED(const char *, | 1364 JNI_ENTRY_CHECKED(const char *, |
| 1342 checked_jni_GetStringUTFChars(JNIEnv *env, | 1365 checked_jni_GetStringUTFChars(JNIEnv *env, |
| 1343 jstring str, | 1366 jstring str, |
| 1344 jboolean *isCopy)) | 1367 jboolean *isCopy)) |
| 1345 functionEnter(thr); | 1368 functionEnter(thr); |
| 1346 IN_VM( | 1369 IN_VM( |
| 1347 checkString(thr, str); | 1370 checkString(thr, str); |
| 1348 ) | 1371 ) |
| 1349 const char *result = UNCHECKED()->GetStringUTFChars(env,str,isCopy); | 1372 const char *result = UNCHECKED()->GetStringUTFChars(env,str,isCopy); |
| 1350 functionExit(env); | 1373 assert (isCopy == NULL || *isCopy == JNI_TRUE, "GetStringUTFChars didn't return a copy as expected"); |
| 1351 return result; | 1374 |
| 1375 size_t len = strlen(result) + 1; // + 1 for NULL termination | |
| 1376 jint* tagLocation = (jint*) AllocateHeap(len + sizeof(jint), "checked_jni_GetStringUTFChars"); | |
| 1377 *tagLocation = STRING_UTF_TAG; | |
| 1378 char* newResult = (char*) (tagLocation + 1); | |
| 1379 strcpy(newResult, result); | |
| 1380 // Avoiding call to UNCHECKED()->ReleaseStringUTFChars() since that will fire unexpected dtrace probes | |
| 1381 // Note that the dtrace arguments for the allocated memory will not match up with this solution. | |
| 1382 FreeHeap((char*)result); | |
| 1383 | |
| 1384 functionExit(env); | |
| 1385 return newResult; | |
| 1352 JNI_END | 1386 JNI_END |
| 1353 | 1387 |
| 1354 JNI_ENTRY_CHECKED(void, | 1388 JNI_ENTRY_CHECKED(void, |
| 1355 checked_jni_ReleaseStringUTFChars(JNIEnv *env, | 1389 checked_jni_ReleaseStringUTFChars(JNIEnv *env, |
| 1356 jstring str, | 1390 jstring str, |
| 1357 const char* chars)) | 1391 const char* chars)) |
| 1358 functionEnterExceptionAllowed(thr); | 1392 functionEnterExceptionAllowed(thr); |
| 1359 IN_VM( | 1393 IN_VM( |
| 1360 checkString(thr, str); | 1394 checkString(thr, str); |
| 1361 ) | 1395 ) |
| 1362 /* cannot check validity of copy, unless every request is logged by | 1396 if (chars == NULL) { |
| 1363 * checking code. Implementation of this check is deferred until a | 1397 // still do the unchecked call to allow dtrace probes |
| 1364 * subsequent release. | 1398 UNCHECKED()->ReleaseStringUTFChars(env,str,chars); |
| 1365 */ | 1399 } |
| 1366 UNCHECKED()->ReleaseStringUTFChars(env,str,chars); | 1400 else { |
| 1401 jint* tagLocation = ((jint*) chars) - 1; | |
| 1402 if (*tagLocation != STRING_UTF_TAG) { | |
| 1403 NativeReportJNIFatalError(thr, "ReleaseStringUTFChars called on something not allocated by GetStringUTFChars"); | |
| 1404 } | |
| 1405 UNCHECKED()->ReleaseStringUTFChars(env,str,(const char*)tagLocation); | |
| 1406 } | |
| 1367 functionExit(env); | 1407 functionExit(env); |
| 1368 JNI_END | 1408 JNI_END |
| 1369 | 1409 |
| 1370 JNI_ENTRY_CHECKED(jsize, | 1410 JNI_ENTRY_CHECKED(jsize, |
| 1371 checked_jni_GetArrayLength(JNIEnv *env, | 1411 checked_jni_GetArrayLength(JNIEnv *env, |
