《jdk8u源码分析》6.4.GetJVMPath

src/windows/bin/java_md.c::GetJVMPath

/*
 * Given a JRE location and a JVM type, construct what the name the
 * JVM shared library will be.  Return true, if such a library
 * exists, false otherwise.
 */
static jboolean
GetJVMPath(const char *jrepath, const char *jvmtype,
           char *jvmpath, jint jvmpathsize)
{
    struct stat s;
    //如果jvmtype包含斜杠'/' | '\\'，jvmpath = ${jvmtype}\\jvm.dll
    //否则 jvmpath = %JRE_HOME%\\bin\\${jvmtype}\\jvm.dll
    if (JLI_StrChr(jvmtype, '/') || JLI_StrChr(jvmtype, '\\')) {
        JLI_Snprintf(jvmpath, jvmpathsize, "%s\\" JVM_DLL, jvmtype);
    } else {
        JLI_Snprintf(jvmpath, jvmpathsize, "%s\\bin\\%s\\" JVM_DLL,
                     jrepath, jvmtype);
    }
    //获取文件相关信息并储存到结构体stat s中，如果成功返回0，失败返回-1
    if (stat(jvmpath, &s) == 0) {
        return JNI_TRUE;
    } else {
        return JNI_FALSE;
    }
}