Herman Venter
e5983c0e98
Breakpoints correspond to source lines, not byte code operations, so more than one operation may correspond to a break point. Each operation checks for breakpoints, so breakpoints are disabled when encountered, otherwise commands such as continue and next would get stuck on a line until all the byte code operation for a line have been carried out. Such break points are re-enabled as soon as a byte code for another line is executed. This does not work if no other byte codes are carried out (i.e. if JITted code runs) until control loops back to the disabled break point. Consequently the disable logic now keeps track of the offset of the byte that first triggered disablement. If the break point is still disabled by the time control comes back to that byte code, the break point is temporarily enabled. Differential Revision: D909092
312 linhas
9.8 KiB
C++
312 linhas
9.8 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#include "hphp/runtime/debugger/cmd/cmd_interrupt.h"
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#include "hphp/runtime/debugger/cmd/cmd_break.h"
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#include "hphp/runtime/debugger/cmd/cmd_print.h"
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namespace HPHP { namespace Eval {
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///////////////////////////////////////////////////////////////////////////////
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TRACE_SET_MOD(debugger);
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void CmdInterrupt::sendImpl(DebuggerThriftBuffer &thrift) {
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DebuggerCommand::sendImpl(thrift);
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assert(m_interrupt != ExceptionHandler); // Server-side only.
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thrift.write(m_interrupt);
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thrift.write(m_program);
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thrift.write(m_errorMsg);
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thrift.write(m_threadId);
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// Used to be m_pendingJump, but that's been removed. Write false until
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// we rev the protocol.
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thrift.write(false);
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if (m_site) {
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thrift.write(true);
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thrift.write(m_site->getFile());
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thrift.write(m_site->getLine0());
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thrift.write(m_site->getChar0());
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thrift.write(m_site->getLine1());
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thrift.write(m_site->getChar1());
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thrift.write(m_site->getNamespace());
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thrift.write(m_site->getClass());
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thrift.write(m_site->getFunction());
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Variant e = m_site->getError();
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if (e.isNull()) {
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thrift.write("");
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} else if (e.isObject()) {
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thrift.write(e.toObject()->o_getClassName());
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} else {
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String ex(BreakPointInfo::ErrorClassName);
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thrift.write(ex);
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}
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thrift.write(e.toString());
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} else {
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thrift.write(false);
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}
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BreakPointInfo::SendImpl(0, m_matched, thrift);
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}
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void CmdInterrupt::recvImpl(DebuggerThriftBuffer &thrift) {
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DebuggerCommand::recvImpl(thrift);
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thrift.read(m_interrupt);
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thrift.read(m_program);
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thrift.read(m_errorMsg);
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thrift.read(m_threadId);
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// Used to be m_pendingJump, but that's been removed. Read a dummy bool until
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// we rev the protocol.
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bool dummy;
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thrift.read(dummy);
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m_bpi = BreakPointInfoPtr(new BreakPointInfo());
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bool site; thrift.read(site);
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if (site) {
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thrift.read(m_bpi->m_file);
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thrift.read(m_bpi->m_line1);
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thrift.read(m_bpi->m_char1);
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thrift.read(m_bpi->m_line2);
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thrift.read(m_bpi->m_char2);
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DFunctionInfoPtr func(new DFunctionInfo());
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thrift.read(func->m_namespace);
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thrift.read(func->m_class);
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thrift.read(func->m_function);
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m_bpi->m_funcs.push_back(func);
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thrift.read(m_bpi->m_exceptionClass);
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thrift.read(m_bpi->m_exceptionObject);
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}
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BreakPointInfo::RecvImpl(0, m_matched, thrift);
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}
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std::string CmdInterrupt::desc() const {
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switch (m_interrupt) {
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case SessionStarted:
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if (!m_program.empty()) {
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return m_program + " loaded.";
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}
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return "Program loaded.";
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case SessionEnded:
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if (!m_program.empty()) {
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return m_program + " exited normally.";
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}
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return "Program exited normally.";
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case RequestStarted:
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if (!m_program.empty()) {
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return m_program + " started.";
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}
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return "Web request started.";
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case RequestEnded:
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if (!m_program.empty()) {
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return m_program + " ended.";
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}
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return "Web request ended.";
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case PSPEnded:
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if (!m_program.empty()) {
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return "Post-Send Processing for " + m_program + " was ended.";
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}
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return "Post-Send Processing was ended.";
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case HardBreakPoint:
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case BreakPointReached:
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case ExceptionThrown: {
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assert(m_site);
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if (m_site) {
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return m_site->desc();
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}
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return "Breakpoint reached.";
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}
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}
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assert(false);
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return "";
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}
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void CmdInterrupt::onClient(DebuggerClient &client) {
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client.setCurrentLocation(m_threadId, m_bpi);
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if (!client.getDebuggerClientSmallStep()) {
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// Adjust line and char if it's not small stepping
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if (m_bpi->m_line1 == m_bpi->m_line2) {
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m_bpi->m_char1 = 1;
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m_bpi->m_char2 = 100;
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}
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}
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client.setMatchedBreakPoints(m_matched);
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switch (m_interrupt) {
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case SessionStarted:
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if (!m_program.empty()) {
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client.info("Program %s loaded. Type '[r]un' or '[c]ontinue' to go.",
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m_program.c_str());
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m_bpi->m_file = m_program;
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}
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break;
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case SessionEnded:
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if (!m_program.empty()) {
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client.info("Program %s exited normally.", m_program.c_str());
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}
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break;
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case RequestStarted:
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if (!m_program.empty()) {
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client.info("Web request %s started.", m_program.c_str());
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}
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break;
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case RequestEnded:
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if (!m_program.empty()) {
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client.info("Web request %s ended.", m_program.c_str());
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}
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break;
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case PSPEnded:
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if (!m_program.empty()) {
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client.info("Post-Send Processing for %s was ended.",
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m_program.c_str());
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}
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break;
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case HardBreakPoint:
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case BreakPointReached:
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case ExceptionThrown: {
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bool found = false;
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bool toggled = false;
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BreakPointInfoPtrVec *bps = client.getBreakPoints();
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for (unsigned int i = 0; i < m_matched.size(); i++) {
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BreakPointInfoPtr bpm = m_matched[i];
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BreakPointInfoPtr bp;
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int index = 0;
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for (; index < (int)bps->size(); index++) {
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if (bpm->same((*bps)[index])) {
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bp = (*bps)[index];
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break;
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}
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}
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if (bp) {
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found = true;
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if (bp->m_state == BreakPointInfo::Once) {
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bp->m_state = BreakPointInfo::Disabled;
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toggled = true;
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}
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if (m_interrupt == BreakPointReached ||
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m_interrupt == HardBreakPoint) {
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client.info("Breakpoint %d reached %s", bp->index(),
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m_bpi->site().c_str());
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client.shortCode(m_bpi);
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} else {
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if (m_bpi->m_exceptionClass == BreakPointInfo::ErrorClassName) {
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client.info("Breakpoint %d reached: An error occurred %s",
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bp->index(), m_bpi->site().c_str());
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client.shortCode(m_bpi);
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client.error("Error Message: %s",
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m_bpi->m_exceptionObject.c_str());
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} else {
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client.info("Breakpoint %d reached: Throwing %s %s",
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bp->index(),
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m_bpi->m_exceptionClass.c_str(),
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m_bpi->site().c_str());
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client.shortCode(m_bpi);
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if (client.getLogFileHandler()) {
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client.output(m_bpi->m_exceptionObject);
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}
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}
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}
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if (!bpm->m_output.empty()) {
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client.print(bpm->m_output);
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}
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}
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}
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if (toggled) {
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CmdBreak::SendClientBreakpointListToServer(client);
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}
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if (!found) {
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if (m_interrupt == HardBreakPoint) {
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// for HardBreakPoint, default the frame to the caller
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client.setFrame(1);
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}
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client.info("Break %s", m_bpi->site().c_str());
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client.shortCode(m_bpi);
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}
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break;
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}
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}
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if (!m_errorMsg.empty()) {
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client.error(m_errorMsg);
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}
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// watches
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switch (m_interrupt) {
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case SessionStarted:
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case RequestStarted:
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break;
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default: {
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DebuggerClient::WatchPtrVec &watches = client.getWatches();
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for (int i = 0; i < (int)watches.size(); i++) {
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if (i > 0) client.output("%s", "");
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client.info("Watch %d: %s =", i + 1, watches[i]->second.c_str());
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Variant v = CmdPrint().processWatch(client, watches[i]->first,
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watches[i]->second);
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client.output(CmdPrint::FormatResult(watches[i]->first, v));
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}
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}
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}
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}
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bool CmdInterrupt::onServer(DebuggerProxy &proxy) {
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return proxy.sendToClient(this);
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}
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bool CmdInterrupt::shouldBreak(DebuggerProxy &proxy,
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const BreakPointInfoPtrVec &bps,
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int stackDepth) {
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switch (m_interrupt) {
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case SessionStarted:
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case SessionEnded:
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case HardBreakPoint:
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return true; // always break
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case RequestStarted:
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case RequestEnded:
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case PSPEnded:
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case BreakPointReached:
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case ExceptionThrown:
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m_matched.clear();
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if (m_site) {
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auto offset = m_site->getCurOffset();
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for (unsigned int i = 0; i < bps.size(); i++) {
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if (bps[i]->m_state != BreakPointInfo::Disabled &&
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bps[i]->breakable(stackDepth, offset) &&
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bps[i]->cmatch(proxy, getInterruptType(), *m_site)) {
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BreakPointInfoPtr bp(new BreakPointInfo());
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*bp = *bps[i]; // make a copy
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m_matched.push_back(bp);
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}
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}
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}
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return !m_matched.empty();
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case ExceptionHandler:
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return false; // For flow control only at this time.
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}
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assert(false);
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return false;
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}
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std::string CmdInterrupt::getFileLine() const {
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string ret;
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if (m_site) {
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if (m_site->getFile()) {
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ret = m_site->getFile();
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}
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ret += ":" + lexical_cast<string>(m_site->getLine0());
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}
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return ret;
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}
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///////////////////////////////////////////////////////////////////////////////
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}}
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