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newlib-cygwin
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Cygwin: strace: print windows and cygwin pid in event output 

strace only printed the Windows PID in event output so far.

Especially now that Windows and Cygwin PID are decoupled, the
strace user might like to see the Cygwin pid in event output as
well.  However, at process startup, the process might not have
a Cygwin PID yet.

To mitigate this, always print the Windows PID and only add the
Cygwin pid if it exists.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2019-03-23 17:50:00 +01:00
parent 10900b98d1
commit ae3370bb9d
3 changed files with 42 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
winsup/cygwin/external.cc
View File

@ -331,6 +331,10 @@ cygwin_internal (cygwin_getinfo_types t, ...)
}
break;
case CW_MAX_CYGWIN_PID:
res = MAX_PID;
break;
case CW_EXTRACT_DOMAIN_AND_USER:
{
WCHAR nt_domain[MAX_DOMAIN_NAME_LEN + 1];

2
winsup/cygwin/include/sys/cygwin.h
View File

@ -159,6 +159,7 @@ typedef enum
CW_EXCEPTION_RECORD_FROM_SIGINFO_T,
CW_CYGHEAP_PROFTHR_ALL,
CW_WINPID_TO_CYGWIN_PID,
CW_MAX_CYGWIN_PID,
} cygwin_getinfo_types;
#define CW_LOCK_PINFO CW_LOCK_PINFO
@ -222,6 +223,7 @@ typedef enum
#define CW_EXCEPTION_RECORD_FROM_SIGINFO_T CW_EXCEPTION_RECORD_FROM_SIGINFO_T
#define CW_CYGHEAP_PROFTHR_ALL CW_CYGHEAP_PROFTHR_ALL
#define CW_WINPID_TO_CYGWIN_PID CW_WINPID_TO_CYGWIN_PID
#define CW_MAX_CYGWIN_PID CW_MAX_CYGWIN_PID
/* Token type for CW_SET_EXTERNAL_TOKEN */
enum

49
winsup/utils/strace.cc
View File

@ -672,6 +672,25 @@ GetFileNameFromHandle(HANDLE hFile, WCHAR pszFilename[MAX_PATH+1])
return result;
}
static char *
cygwin_pid (DWORD winpid)
{
static char buf[48];
static DWORD max_cygpid = 0;
DWORD cygpid;
if (!max_cygpid)
max_cygpid = (DWORD) cygwin_internal (CW_MAX_CYGWIN_PID);
cygpid = (DWORD) cygwin_internal (CW_WINPID_TO_CYGWIN_PID, winpid);
if (cygpid >= max_cygpid)
snprintf (buf, sizeof buf, "%lu", winpid);
else
snprintf (buf, sizeof buf, "%lu (pid: %lu)", winpid, cygpid);
return buf;
}
static DWORD
proc_child (unsigned mask, FILE *ofile, pid_t pid)
{
@ -706,7 +725,8 @@ proc_child (unsigned mask, FILE *ofile, pid_t pid)
{
case CREATE_PROCESS_DEBUG_EVENT:
if (events)
fprintf (ofile, "--- Process %lu created\n", ev.dwProcessId);
fprintf (ofile, "--- Process %s created\n",
cygwin_pid (ev.dwProcessId));
if (ev.u.CreateProcessInfo.hFile)
CloseHandle (ev.u.CreateProcessInfo.hFile);
add_child (ev.dwProcessId, ev.u.CreateProcessInfo.hProcess);
@ -714,8 +734,8 @@ proc_child (unsigned mask, FILE *ofile, pid_t pid)
case CREATE_THREAD_DEBUG_EVENT:
if (events)
fprintf (ofile, "--- Process %lu thread %lu created\n",
ev.dwProcessId, ev.dwThreadId);
fprintf (ofile, "--- Process %s thread %lu created\n",
cygwin_pid (ev.dwProcessId), ev.dwThreadId);
break;
case LOAD_DLL_DEBUG_EVENT:
@ -727,8 +747,9 @@ proc_child (unsigned mask, FILE *ofile, pid_t pid)
if (!GetFileNameFromHandle(ev.u.LoadDll.hFile, dllname))
wcscpy(dllname, L"(unknown)");
fprintf (ofile, "--- Process %lu loaded %ls at %p\n",
ev.dwProcessId, dllname, ev.u.LoadDll.lpBaseOfDll);
fprintf (ofile, "--- Process %s loaded %ls at %p\n",
cygwin_pid (ev.dwProcessId), dllname,
ev.u.LoadDll.lpBaseOfDll);
}
if (ev.u.LoadDll.hFile)
@ -737,8 +758,8 @@ proc_child (unsigned mask, FILE *ofile, pid_t pid)
case UNLOAD_DLL_DEBUG_EVENT:
if (events)
fprintf (ofile, "--- Process %lu unloaded DLL at %p\n",
ev.dwProcessId, ev.u.UnloadDll.lpBaseOfDll);
fprintf (ofile, "--- Process %s unloaded DLL at %p\n",
cygwin_pid (ev.dwProcessId), ev.u.UnloadDll.lpBaseOfDll);
break;
case OUTPUT_DEBUG_STRING_EVENT:
@ -749,16 +770,18 @@ proc_child (unsigned mask, FILE *ofile, pid_t pid)
case EXIT_PROCESS_DEBUG_EVENT:
if (events)
fprintf (ofile, "--- Process %lu exited with status 0x%lx\n",
ev.dwProcessId, ev.u.ExitProcess.dwExitCode);
fprintf (ofile, "--- Process %s exited with status 0x%lx\n",
cygwin_pid (ev.dwProcessId), ev.u.ExitProcess.dwExitCode);
res = ev.u.ExitProcess.dwExitCode;
remove_child (ev.dwProcessId);
break;
case EXIT_THREAD_DEBUG_EVENT:
if (events)
fprintf (ofile, "--- Process %lu thread %lu exited with status 0x%lx\n",
ev.dwProcessId, ev.dwThreadId, ev.u.ExitThread.dwExitCode);
fprintf (ofile, "--- Process %s thread %lu exited with "
"status 0x%lx\n",
cygwin_pid (ev.dwProcessId), ev.dwThreadId,
ev.u.ExitThread.dwExitCode);
break;
case EXCEPTION_DEBUG_EVENT:
@ -770,8 +793,8 @@ proc_child (unsigned mask, FILE *ofile, pid_t pid)
default:
status = DBG_EXCEPTION_NOT_HANDLED;
if (ev.u.Exception.dwFirstChance)
fprintf (ofile, "--- Process %lu, exception %08lx at %p\n",
ev.dwProcessId,
fprintf (ofile, "--- Process %s, exception %08lx at %p\n",
cygwin_pid (ev.dwProcessId),
ev.u.Exception.ExceptionRecord.ExceptionCode,
ev.u.Exception.ExceptionRecord.ExceptionAddress);
break;