31 #include "mlvmJvmtiUtils.h"
  32 
  33 extern "C" {
  34 
  35 void copyFromJString(JNIEnv * pEnv, jstring src, char ** dst) {
  36     const char * pStr;
  37         jsize len;
  38 
  39     if (!NSK_VERIFY((pStr = pEnv->GetStringUTFChars(src, NULL)) != NULL)) {
  40         return;
  41     }
  42 
  43     len = pEnv->GetStringUTFLength(src) + 1;
  44     *dst = (char*) malloc(len);
  45     strncpy(*dst, pStr, len);
  46 
  47     pEnv->ReleaseStringUTFChars(src, pStr);
  48 }
  49 
  50 struct MethodName * getMethodName(jvmtiEnv * pJvmtiEnv, jmethodID method) {
  51     char * szName;
  52     char * szSignature;
  53     jclass clazz;
  54     struct MethodName * mn;
  55 
  56     if (!NSK_JVMTI_VERIFY(pJvmtiEnv->GetMethodName(method, &szName, NULL, NULL))) {
  57         return NULL;
  58     }
  59 
  60     if (!NSK_JVMTI_VERIFY(pJvmtiEnv->GetMethodDeclaringClass(method, &clazz))) {
  61         NSK_JVMTI_VERIFY(pJvmtiEnv->Deallocate((unsigned char*) szName));
  62         return NULL;
  63     }
  64 
  65     if (!NSK_JVMTI_VERIFY(pJvmtiEnv->GetClassSignature(clazz, &szSignature, NULL))) {
  66         NSK_JVMTI_VERIFY(pJvmtiEnv->Deallocate((unsigned char*) szName));
  67         return NULL;




  68     }
  69 
  70     mn = (MethodName*) malloc(sizeof(MethodNameStruct));




  71     strncpy(mn->methodName, szName, sizeof(mn->methodName));
  72     strncpy(mn->classSig, szSignature, sizeof(mn->classSig));
  73 

  74     NSK_JVMTI_VERIFY(pJvmtiEnv->Deallocate((unsigned char*) szName));
  75     NSK_JVMTI_VERIFY(pJvmtiEnv->Deallocate((unsigned char*) szSignature));
  76     return mn;
  77 }
  78 
  79 char * locationToString(jvmtiEnv * pJvmtiEnv, jmethodID method, jlocation location) {
  80     struct MethodName * pMN;
  81     int len;
  82     char * result;
  83     const char * const format = "%s .%s :" JLONG_FORMAT;
  84 
  85     pMN = getMethodName(pJvmtiEnv, method);
  86     if (!pMN)
  87         return strdup("NONE");
  88 
  89     len = snprintf(NULL, 0, format, pMN->classSig, pMN->methodName, location) + 1;
  90 
  91     if (len <= 0) {
  92         free(pMN);
  93         return NULL;

  31 #include "mlvmJvmtiUtils.h"
  32 
  33 extern "C" {
  34 
  35 void copyFromJString(JNIEnv * pEnv, jstring src, char ** dst) {
  36     const char * pStr;
  37         jsize len;
  38 
  39     if (!NSK_VERIFY((pStr = pEnv->GetStringUTFChars(src, NULL)) != NULL)) {
  40         return;
  41     }
  42 
  43     len = pEnv->GetStringUTFLength(src) + 1;
  44     *dst = (char*) malloc(len);
  45     strncpy(*dst, pStr, len);
  46 
  47     pEnv->ReleaseStringUTFChars(src, pStr);
  48 }
  49 
  50 struct MethodName * getMethodName(jvmtiEnv * pJvmtiEnv, jmethodID method) {
  51     char * szName = NULL;
  52     char * szSignature = NULL;
  53     jclass clazz;
  54     struct MethodName * mn = NULL;
  55 
  56     if (!NSK_JVMTI_VERIFY(pJvmtiEnv->GetMethodName(method, &szName, NULL, NULL))) {
  57         goto out;
  58     }
  59 
  60     if (!NSK_JVMTI_VERIFY(pJvmtiEnv->GetMethodDeclaringClass(method, &clazz))) {
  61         goto out;

  62     }
  63 
  64     if (!NSK_JVMTI_VERIFY(pJvmtiEnv->GetClassSignature(clazz, &szSignature, NULL))) {
  65         goto out;
  66     }
  67 
  68     if (strlen(szName) + 1 > sizeof(mn->methodName) ||
  69         strlen(szSignature) + 1 > sizeof(mn->classSig)) {
  70         goto out;
  71     }
  72 
  73     mn = (MethodName*) malloc(sizeof(MethodNameStruct));
  74     if (mn == NULL) {
  75         goto out;
  76     }
  77 
  78     strncpy(mn->methodName, szName, sizeof(mn->methodName));
  79     strncpy(mn->classSig, szSignature, sizeof(mn->classSig));
  80 
  81  out:
  82     NSK_JVMTI_VERIFY(pJvmtiEnv->Deallocate((unsigned char*) szName));
  83     NSK_JVMTI_VERIFY(pJvmtiEnv->Deallocate((unsigned char*) szSignature));
  84     return mn;
  85 }
  86 
  87 char * locationToString(jvmtiEnv * pJvmtiEnv, jmethodID method, jlocation location) {
  88     struct MethodName * pMN;
  89     int len;
  90     char * result;
  91     const char * const format = "%s .%s :" JLONG_FORMAT;
  92 
  93     pMN = getMethodName(pJvmtiEnv, method);
  94     if (!pMN)
  95         return strdup("NONE");
  96 
  97     len = snprintf(NULL, 0, format, pMN->classSig, pMN->methodName, location) + 1;
  98 
  99     if (len <= 0) {
 100         free(pMN);
 101         return NULL;