270 lines
9.6 KiB
C++
270 lines
9.6 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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//
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// threads.cpp - Extension to find Singularity threads.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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#include "singx86.h"
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ULONG64 stoppedThreads;
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ULONG64 blockedThreads;
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ULONG64 runnableThreads;
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ULONG64 unblockedThreads;
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ULONG64 idleThreads;
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CHAR * GetQueueName(ULONG64 queue)
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{
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if (stoppedThreads == 0) {
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stoppedThreads = GetStaticPointer("nt!Scheduler::stoppedThreads");
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blockedThreads = GetStaticPointer("nt!Scheduler::blockedThreads");
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runnableThreads = GetStaticPointer("nt!Scheduler::runnableThreads");
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unblockedThreads = GetStaticPointer("nt!Scheduler::unblockedThreads");
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idleThreads = GetStaticPointer("nt!Scheduler::idleThreads");
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ExtVerb("Queues: stopped=%p blocked=%p runnable=%p unblocked=%p idle=%p\n",
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stoppedThreads, blockedThreads, runnableThreads,
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unblockedThreads, idleThreads);
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}
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if (queue == stoppedThreads) {
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return "stopped";
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}
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if (queue == blockedThreads) {
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return "blocked";
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}
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if (queue == runnableThreads) {
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return "runnable";
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}
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if (queue == unblockedThreads) {
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return "unblocked";
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}
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if (queue == idleThreads) {
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return "idle";
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}
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return "running";
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}
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HRESULT DumpThread(ULONG64 threadaddr, bool stack, bool fullstack, bool detail, bool blocked)
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{
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HRESULT status = S_OK;
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if (threadaddr == 0) {
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return S_FALSE;
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}
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Thread thread;
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ThreadEntry entry;
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EXT_CHECK(ThreadStruct.Read(threadaddr, &thread));
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EXT_CHECK(ThreadEntryStruct.Read(thread.schedulerEntry, &entry));
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char *which = GetQueueName(entry.queue);
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char offQueueMarker = (entry.queue != NULL) ? ' ' : '*';
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if ((stack) || (fullstack)) {
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ExtOut("%c thread=%p { tid=%03x pid=%03x eip=%p, ebp=%p, esp=%p %02x }\n",
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offQueueMarker,
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threadaddr,
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(ULONG)(thread.context.threadIndex == 0xffff ? 0xfff : thread.context.threadIndex),
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(ULONG)(thread.context.processId == 0xffff ? 0xfff : thread.context.processId),
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thread.context.eip,
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thread.context.ebp,
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thread.context.esp,
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(ULONG)thread.context.gcStates);
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if (fullstack) {
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DEBUG_STACK_FRAME frames[30];
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ULONG filled = 0;
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status = g_ExtControl->GetStackTrace(thread.context.ebp,
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thread.context.esp,
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thread.context.eip,
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frames,
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arrayof(frames),
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&filled);
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if (status == S_OK) {
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g_ExtClient->SetOutputLinePrefix(" ");
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g_ExtControl->OutputStackTrace(DEBUG_OUTPUT_NORMAL,
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frames,
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filled,
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detail ? (DEBUG_STACK_FRAME_ADDRESSES |
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DEBUG_STACK_COLUMN_NAMES |
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DEBUG_STACK_SOURCE_LINE) : 0);
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}
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}
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else {
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DEBUG_STACK_FRAME frames[10];
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ULONG filled = 0;
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status = g_ExtControl->GetStackTrace(thread.context.ebp,
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thread.context.esp,
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thread.context.eip,
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frames,
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arrayof(frames),
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&filled);
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if (status == S_OK) {
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g_ExtClient->SetOutputLinePrefix(" ");
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g_ExtControl->OutputStackTrace(DEBUG_OUTPUT_NORMAL,
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frames,
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filled,
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detail ? (DEBUG_STACK_FRAME_ADDRESSES |
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DEBUG_STACK_COLUMN_NAMES |
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DEBUG_STACK_SOURCE_LINE) : 0);
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}
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}
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}
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else {
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CHAR name[512];
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ULONG64 displacement = 0;
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status = g_ExtSymbols->GetNameByOffset(thread.context.eip,
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name,
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arrayof(name),
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NULL,
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&displacement);
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if (status == S_OK) {
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ExtOut("%c thread=%p { tid=%03x pid=%03x eip=%p, ebp=%p, esp=%p %02x } %s+%I64d\n",
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offQueueMarker,
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threadaddr,
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(ULONG)(thread.context.threadIndex == 0xffff ? 0xfff : thread.context.threadIndex),
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(ULONG)(thread.context.processId == 0xffff ? 0xfff : thread.context.processId),
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thread.context.eip,
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thread.context.ebp,
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thread.context.esp,
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(ULONG)thread.context.gcStates,
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name,
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(LONG64)displacement);
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}
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else {
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ExtOut("%c thread=%p { tid=%03x pid=%03x eip=%p, ebp=%p, esp=%p %02x }\n",
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offQueueMarker,
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threadaddr,
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(ULONG)(thread.context.threadIndex == 0xffff ? 0xfff : thread.context.threadIndex),
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(ULONG)(thread.context.processId == 0xffff ? 0xfff : thread.context.processId),
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thread.context.eip,
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thread.context.ebp,
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thread.context.esp,
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(ULONG)thread.context.gcStates);
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}
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}
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if (blocked) {
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if (entry.queue != NULL) {
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}
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}
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if (blocked) {
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ExtOut(" { %-8.8s blocked=%d count=%d until=%16I64x queue=%p entry=%p}\n",
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which,
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(ULONG)thread.blocked,
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(ULONG)thread.blockedOnCount,
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thread.blockedUntil,
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entry.queue,
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thread.schedulerEntry);
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}
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Exit:
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return status;
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}
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EXT_DECL(threads) // Defines: PDEBUG_CLIENT Client, PCSTR args
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{
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EXT_ENTER(); // Defines: HRESULT status = S_OK;
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bool stack = false;
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bool fullstack = false;
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bool detail = false;
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bool blocked = false;
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while (*args != '\0') {
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// skip whitespace
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while (*args == ' ' || *args == '\t') {
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args++;
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}
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// process argument
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if (*args == '-' || *args == '/') {
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args++;
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switch (*args++) {
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case 'd': // detail
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case 'D':
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detail = !detail;
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break;
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case 'f': // fullstack
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case 'F':
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fullstack = !fullstack;
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break;
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case 's': // stack
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case 'S':
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stack = !stack;
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break;
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case 'b': // Blocked information
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case 'B':
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blocked = !blocked;
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break;
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case '?': // Help
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case 'h':
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case 'H':
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status = S_FALSE;
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goto Exit;
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}
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while (*args != ' ') {
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args++;
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}
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}
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else {
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break;
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}
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}
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ULONG pointerSize = (g_ExtControl->IsPointer64Bit() == S_OK) ? 8 : 4;
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ULONG64 address = 0;
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ULONG64 threads = 0;
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ULONG type = 0;
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ULONG subtype = 0;
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ULONG64 module = 0;
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EXT_CHECK(g_ExtSymbols->GetOffsetByName("nt!Thread::threadTable", &address));
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EXT_CHECK(g_ExtSymbols->GetOffsetTypeId(address, &type, &module));
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EXT_CHECK(g_ExtData->ReadPointersVirtual(1, address, &threads));
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ExtVerb("threadTable: %p\n", threads);
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CHAR name[512];
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EXT_CHECK(g_ExtSymbols->GetTypeName(module, type, name, arrayof(name), NULL));
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ExtVerb(" threadTable type: %s\n", name);
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int len = strlen(name);
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if (len > 3 &&
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name[len-3] == '[' &&
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name[len-2] == ']' &&
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name[len-1] == '*') {
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name[len-3] = '\0';
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EXT_CHECK(g_ExtSymbols->GetTypeId(module, name, &subtype));
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EXT_CHECK(g_ExtSymbols->GetTypeName(module, subtype, name, arrayof(name), NULL));
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ExtVerb(" threadTable[] type: %s\n", name);
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}
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ULONG lengthOffset = 0;
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EXT_CHECK(g_ExtSymbols->GetFieldOffset(module, type, "overall_length", &lengthOffset));
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ULONG valuesOffset = 0;
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EXT_CHECK(g_ExtSymbols->GetFieldOffset(module, type, "values", &valuesOffset));
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ULONG length = 0;
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EXT_CHECK(g_ExtData->ReadVirtual(threads + lengthOffset, &length, sizeof(length), NULL));
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ExtOut("threadTable: %p [maximum %d entries]\n", threads, length);
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CHAR prefix[256];
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EXT_CHECK(client->GetOutputLinePrefix(prefix, arrayof(prefix), NULL));
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for (ULONG id = 0; id < length; id++) {
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ULONG64 thread = 0;
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EXT_CHECK(g_ExtData->ReadPointersVirtual(1, threads + valuesOffset + id * pointerSize, &thread));
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if (thread != 0) {
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DumpThread(thread, stack, fullstack, detail, blocked);
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g_ExtClient->SetOutputLinePrefix(prefix);
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}
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}
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EXT_LEAVE(); // Macro includes: return status;
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}
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