/*
Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
- Copyright (C) 2000-2007 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "md5_digester.h"
#include "audio_processor.h"
#include "safe_stringstream.h"
-#ifdef DCPOMATIC_WINDOWS
-#include "stack.hpp"
-#endif
#include <dcp/version.h>
#include <dcp/util.h>
#include <dcp/signer.h>
#include <boost/filesystem.hpp>
#ifdef DCPOMATIC_WINDOWS
#include <boost/locale.hpp>
+#include <dbghelp.h>
#endif
#include <signal.h>
#include <iomanip>
using dcp::Size;
using dcp::raw_convert;
+/** Path to our executable, required by the stacktrace stuff and filled
+ * in during App::onInit().
+ */
+string program_name;
static boost::thread::id ui_thread;
static boost::filesystem::path backtrace_file;
return ap.str ();
}
-#ifdef DCPOMATIC_POSIX
-/** @param l Mangled C++ identifier.
- * @return Demangled version.
- */
-static string
-demangle (string l)
-{
- string::size_type const b = l.find_first_of (N_("("));
- if (b == string::npos) {
- return l;
- }
-
- string::size_type const p = l.find_last_of (N_("+"));
- if (p == string::npos) {
- return l;
- }
-
- if ((p - b) <= 1) {
- return l;
- }
-
- string const fn = l.substr (b + 1, p - b - 1);
-
- int status;
- try {
-
- char* realname = abi::__cxa_demangle (fn.c_str(), 0, 0, &status);
- string d (realname);
- free (realname);
- return d;
-
- } catch (std::exception) {
-
- }
-
- return l;
-}
-
-/** Write a stacktrace to an ostream.
- * @param out Stream to write to.
- * @param levels Number of levels to go up the call stack.
- */
-void
-stacktrace (ostream& out, int levels)
-{
- void *array[200];
- size_t size = backtrace (array, 200);
- char** strings = backtrace_symbols (array, size);
-
- if (strings) {
- for (size_t i = 0; i < size && (levels == 0 || i < size_t(levels)); i++) {
- out << N_(" ") << demangle (strings[i]) << "\n";
- }
-
- free (strings);
- }
-}
-#endif
-
/** @param v Version as used by FFmpeg.
* @return A string representation of v.
*/
}
#ifdef DCPOMATIC_WINDOWS
-LONG WINAPI exception_handler(struct _EXCEPTION_POINTERS *)
+
+/** Resolve symbol name and source location given the path to the executable */
+int
+addr2line (void const * const addr)
+{
+ char addr2line_cmd[512] = { 0 };
+ sprintf (addr2line_cmd, "addr2line -f -p -e %.256s %p > %s", program_name.c_str(), addr, backtrace_file.string().c_str());
+ return system(addr2line_cmd);
+}
+
+/** This is called when C signals occur on Windows (e.g. SIGSEGV)
+ * (NOT C++ exceptions!). We write a backtrace to backtrace_file by dark means.
+ * Adapted from code here: http://spin.atomicobject.com/2013/01/13/exceptions-stack-traces-c/
+ */
+LONG WINAPI
+exception_handler(struct _EXCEPTION_POINTERS * info)
{
- dbg::stack s;
FILE* f = fopen_boost (backtrace_file, "w");
- fprintf (f, "Exception thrown:");
- for (dbg::stack::const_iterator i = s.begin(); i != s.end(); ++i) {
- fprintf (f, "%p %s %d %s\n", i->instruction, i->function.c_str(), i->line, i->module.c_str());
+ fprintf (f, "C-style exception %d\n", info->ExceptionRecord->ExceptionCode);
+ fclose(f);
+
+ if (info->ExceptionRecord->ExceptionCode != EXCEPTION_STACK_OVERFLOW) {
+ CONTEXT* context = info->ContextRecord;
+ SymInitialize (GetCurrentProcess (), 0, true);
+
+ STACKFRAME frame = { 0 };
+
+ /* setup initial stack frame */
+#if _WIN64
+ frame.AddrPC.Offset = context->Rip;
+ frame.AddrStack.Offset = context->Rsp;
+ frame.AddrFrame.Offset = context->Rbp;
+#else
+ frame.AddrPC.Offset = context->Eip;
+ frame.AddrStack.Offset = context->Esp;
+ frame.AddrFrame.Offset = context->Ebp;
+#endif
+ frame.AddrPC.Mode = AddrModeFlat;
+ frame.AddrStack.Mode = AddrModeFlat;
+ frame.AddrFrame.Mode = AddrModeFlat;
+
+ while (
+ StackWalk (
+ IMAGE_FILE_MACHINE_I386,
+ GetCurrentProcess (),
+ GetCurrentThread (),
+ &frame,
+ context,
+ 0,
+ SymFunctionTableAccess,
+ SymGetModuleBase,
+ 0
+ )
+ ) {
+ addr2line((void *) frame.AddrPC.Offset);
+ }
+ } else {
+#ifdef _WIN64
+ addr2line ((void *) info->ContextRecord->Rip);
+#else
+ addr2line ((void *) info->ContextRecord->Eip);
+#endif
}
- fclose (f);
+
return EXCEPTION_CONTINUE_SEARCH;
}
#endif
backtrace_file = p;
}
-/* From http://stackoverflow.com/questions/2443135/how-do-i-find-where-an-exception-was-thrown-in-c */
+/** This is called when there is an unhandled exception. Any
+ * backtrace in this function is useless on Windows as the stack has
+ * already been unwound from the throw; we have the gdb wrap hack to
+ * cope with that.
+ */
void
terminate ()
{
<< std::endl;
}
-#ifdef DCPOMATIC_POSIX
- stacktrace (cout, 50);
-#endif
abort();
}
#endif
}
-/** @param s A string.
- * @return Parts of the string split at spaces, except when a space is within quotation marks.
- */
-vector<string>
-split_at_spaces_considering_quotes (string s)
-{
- vector<string> out;
- bool in_quotes = false;
- string c;
- for (string::size_type i = 0; i < s.length(); ++i) {
- if (s[i] == ' ' && !in_quotes) {
- out.push_back (c);
- c = N_("");
- } else if (s[i] == '"') {
- in_quotes = !in_quotes;
- } else {
- c += s[i];
- }
- }
-
- out.push_back (c);
- return out;
-}
-
/** @param job Optional job for which to report progress */
string
md5_digest (vector<boost::filesystem::path> files, shared_ptr<Job> job)
int
round_to (float n, int r)
{
- assert (r == 1 || r == 2 || r == 4);
+ DCPOMATIC_ASSERT (r == 1 || r == 2 || r == 4);
return int (n + float(r) / 2) &~ (r - 1);
}
-/** Read a sequence of key / value pairs from a text stream;
- * the keys are the first words on the line, and the values are
- * the remainder of the line following the key. Lines beginning
- * with # are ignored.
- * @param s Stream to read.
- * @return key/value pairs.
- */
-multimap<string, string>
-read_key_value (istream &s)
-{
- multimap<string, string> kv;
-
- string line;
- while (getline (s, line)) {
- if (line.empty ()) {
- continue;
- }
-
- if (line[0] == '#') {
- continue;
- }
-
- if (line[line.size() - 1] == '\r') {
- line = line.substr (0, line.size() - 1);
- }
-
- size_t const s = line.find (' ');
- if (s == string::npos) {
- continue;
- }
-
- kv.insert (make_pair (line.substr (0, s), line.substr (s + 1)));
- }
-
- return kv;
-}
-
-string
-get_required_string (multimap<string, string> const & kv, string k)
-{
- if (kv.count (k) > 1) {
- throw StringError (N_("unexpected multiple keys in key-value set"));
- }
-
- multimap<string, string>::const_iterator i = kv.find (k);
-
- if (i == kv.end ()) {
- throw StringError (String::compose (_("missing key %1 in key-value set"), k));
- }
-
- return i->second;
-}
-
-int
-get_required_int (multimap<string, string> const & kv, string k)
-{
- string const v = get_required_string (kv, k);
- return raw_convert<int> (v);
-}
-
-float
-get_required_float (multimap<string, string> const & kv, string k)
-{
- string const v = get_required_string (kv, k);
- return raw_convert<float> (v);
-}
-
-string
-get_optional_string (multimap<string, string> const & kv, string k)
-{
- if (kv.count (k) > 1) {
- throw StringError (N_("unexpected multiple keys in key-value set"));
- }
-
- multimap<string, string>::const_iterator i = kv.find (k);
- if (i == kv.end ()) {
- return N_("");
- }
-
- return i->second;
-}
-
-int
-get_optional_int (multimap<string, string> const & kv, string k)
-{
- if (kv.count (k) > 1) {
- throw StringError (N_("unexpected multiple keys in key-value set"));
- }
-
- multimap<string, string>::const_iterator i = kv.find (k);
- if (i == kv.end ()) {
- return 0;
- }
-
- return raw_convert<int> (i->second);
-}
-
/** Trip an assert if the caller is not in the UI thread */
void
ensure_ui_thread ()
{
- assert (boost::this_thread::get_id() == ui_thread);
+ DCPOMATIC_ASSERT (boost::this_thread::get_id() == ui_thread);
}
string
audio_channel_name (int c)
{
- assert (MAX_DCP_AUDIO_CHANNELS == 12);
+ DCPOMATIC_ASSERT (MAX_DCP_AUDIO_CHANNELS == 12);
/// TRANSLATORS: these are the names of audio channels; Lfe (sub) is the low-frequency
/// enhancement channel (sub-woofer). HI is the hearing-impaired audio track and
return p;
}
-string
-entities_to_text (string e)
-{
- boost::algorithm::replace_all (e, "%3A", ":");
- boost::algorithm::replace_all (e, "%2F", "/");
- return e;
-}
-
-int64_t
-divide_with_round (int64_t a, int64_t b)
-{
- if (a % b >= (b / 2)) {
- return (a + b - 1) / b;
- } else {
- return a / b;
- }
-}
-
/** Return a user-readable string summarising the versions of our dependencies */
string
dependency_version_summary ()
return s.str ();
}
-/** Construct a ScopedTemporary. A temporary filename is decided but the file is not opened
- * until ::open() is called.
- */
-ScopedTemporary::ScopedTemporary ()
- : _open (0)
-{
- _file = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path ();
-}
-
-/** Close and delete the temporary file */
-ScopedTemporary::~ScopedTemporary ()
-{
- close ();
- boost::system::error_code ec;
- boost::filesystem::remove (_file, ec);
-}
-
-/** @return temporary filename */
-char const *
-ScopedTemporary::c_str () const
-{
- return _file.string().c_str ();
-}
-
-/** Open the temporary file.
- * @return File's FILE pointer.
- */
-FILE*
-ScopedTemporary::open (char const * params)
-{
- _open = fopen (c_str(), params);
- return _open;
-}
-
-/** Close the file */
-void
-ScopedTemporary::close ()
-{
- if (_open) {
- fclose (_open);
- _open = 0;
- }
-}
-
ContentTimePeriod
subtitle_period (AVSubtitle const & sub)
{