java - 调用 j9port_startup_library 时发生访问冲突

标签 java j9 openj9 omr

我已经使用以下说明为 Windows 构建了 openj9:https://github.com/eclipse/openj9/blob/master/buildenv/Build_Instructions_V8.md#windows

当我尝试以下代码时(Visual Studio 2017):

J9PortLibraryVersion portver;
J9PORT_SET_VERSION(&portver, J9PORT_CAPABILITY_MASK);

J9PortLibrary *portlib;
int32_t rc = j9port_allocate_library(&portver, &portlib);
if (rc != 0)
{
    printf("j9port_allocate_library failed with: %d\n", rc);
    return 1;
}

rc = j9port_create_library(portlib, &portver, sizeof(J9PortLibrary));
if (rc != 0)
{
    printf("j9port_create_library failed with %d\n", rc);
    return 1;
}

rc = j9port_startup_library(portlib);
if (rc != 0)
{
    printf("j9port_startup_library failed with %d\n", rc);
    return 1;
}
printf("j9port_startup_library: %d\n", rc);

我在 j9port_startup_library 上遇到访问冲突:exception throw at 0x00007FFF0FC9430A (j9thr29.dll) in sample.exe: 0xC0000005: Access violation reading location 0x0000000000000000。

检查 portlib 表明 portGlobals 是 NULL,我认为它不应该是。 portlib

当我在调试器之外运行 exe 时,我看到以下断言(由于某种原因我在调试器中看不到):

** ASSERTION FAILED ** j9prt.504 at common/j9port.c:404 Assert_PRT_true((omrthread_self() != ((void *)0)))

** ASSERTION FAILED ** omrport.0 at ../../omr/port/common/omrport.c:515 Assert_PRT_true((omrthread_self() != ((void *)0)))

我是否遗漏了一个步骤或者是什么导致了此访问冲突?

编辑:我使用 Visual Studio 2010 在 Windows 7 x64 上重建项目并在 VS2010 中运行在 MCE 之上,VS 显示我们崩溃了

omrthread.c

static omrthread_monitor_t
monitor_allocate(omrthread_t self, intptr_t policy, intptr_t policyData)
{
   omrthread_monitor_t newMonitor;
   omrthread_library_t lib = self->library;

self 为 nil,因此抛出 ACCESS_VIOLATION: 截屏 enter image description here .com/MMW59.png

最佳答案

这是在 Eclipse OpenJ9 github 项目中提出的:https://github.com/eclipse/openj9/issues/1564

答案是初始化端口库如下:

int main(int argc, char **argv) {
    omrthread_t attachedThread = NULL;
    J9PortLibraryVersion portver;
    J9PortLibrary portlib;
    intptr_t rc;
    intptr_t fd;

    rc = omrthread_init_library();
    if (rc != 0) {
        printf("omrthread_init_library failed with: %lld\n", rc);
        return 1;
    }

    rc = omrthread_attach_ex(&attachedThread, J9THREAD_ATTR_DEFAULT);
    if (rc != 0) {
        printf("omrthread_attach_ex failed with: %lld\n", rc);
        return 1;
    }

    J9PORT_SET_VERSION(&portver, J9PORT_CAPABILITY_MASK);
    rc = j9port_init_library(&portlib, &portver, sizeof(portlib));
    if (rc != 0) {
        printf("j9port_init_library failed with: %lld\n", rc);
        return 1;
    }

关于java - 调用 j9port_startup_library 时发生访问冲突,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49535954/

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