# HG changeset patch # User goetz # Date 1374793158 -7200 # Node ID b6f7d0618f26023b9ca1126caf5e2b87d7d8b80e # Parent 438e13354adf109452928df85b3d3eda0614706a 8020775: PPC64 (part 12): posix signal printing Summary: Implement methods printing posix signal information and call them in unix os files. diff --git a/src/os/bsd/vm/os_bsd.cpp b/src/os/bsd/vm/os_bsd.cpp --- a/src/os/bsd/vm/os_bsd.cpp +++ b/src/os/bsd/vm/os_bsd.cpp @@ -1618,58 +1618,12 @@ st->cr(); } -// Taken from /usr/include/bits/siginfo.h Supposed to be architecture specific -// but they're the same for all the bsd arch that we support -// and they're the same for solaris but there's no common place to put this. -const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", - "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", - "ILL_COPROC", "ILL_BADSTK" }; - -const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", - "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", - "FPE_FLTINV", "FPE_FLTSUB", "FPE_FLTDEN" }; - -const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; - -const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; - void os::print_siginfo(outputStream* st, void* siginfo) { - st->print("siginfo:"); - - const int buflen = 100; - char buf[buflen]; - siginfo_t *si = (siginfo_t*)siginfo; - st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); - if (si->si_errno != 0 && strerror_r(si->si_errno, buf, buflen) == 0) { - st->print("si_errno=%s", buf); - } else { - st->print("si_errno=%d", si->si_errno); - } - const int c = si->si_code; - assert(c > 0, "unexpected si_code"); - switch (si->si_signo) { - case SIGILL: - st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGFPE: - st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGSEGV: - st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGBUS: - st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - default: - st->print(", si_code=%d", si->si_code); - // no si_addr - } - - if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && + const siginfo_t* si = (const siginfo_t*)siginfo; + + os::Posix::print_siginfo_brief(st, si); + + if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && UseSharedSpaces) { FileMapInfo* mapinfo = FileMapInfo::current_info(); if (mapinfo->is_in_shared_space(si->si_addr)) { @@ -3338,7 +3292,8 @@ st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); } - st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); + st->print(", sa_mask[0]="); + os::Posix::print_signal_set_short(st, &sa.sa_mask); address rh = VMError::get_resetted_sighandler(sig); // May be, handler was resetted by VMError? @@ -3347,7 +3302,8 @@ sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK; } - st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); + st->print(", sa_flags="); + os::Posix::print_sa_flags(st, sa.sa_flags); // Check: is it our handler? if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) || diff --git a/src/os/linux/vm/os_linux.cpp b/src/os/linux/vm/os_linux.cpp --- a/src/os/linux/vm/os_linux.cpp +++ b/src/os/linux/vm/os_linux.cpp @@ -2231,58 +2231,12 @@ st->cr(); } -// Taken from /usr/include/bits/siginfo.h Supposed to be architecture specific -// but they're the same for all the linux arch that we support -// and they're the same for solaris but there's no common place to put this. -const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", - "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", - "ILL_COPROC", "ILL_BADSTK" }; - -const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", - "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", - "FPE_FLTINV", "FPE_FLTSUB", "FPE_FLTDEN" }; - -const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; - -const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; - void os::print_siginfo(outputStream* st, void* siginfo) { - st->print("siginfo:"); - - const int buflen = 100; - char buf[buflen]; - siginfo_t *si = (siginfo_t*)siginfo; - st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); - if (si->si_errno != 0 && strerror_r(si->si_errno, buf, buflen) == 0) { - st->print("si_errno=%s", buf); - } else { - st->print("si_errno=%d", si->si_errno); - } - const int c = si->si_code; - assert(c > 0, "unexpected si_code"); - switch (si->si_signo) { - case SIGILL: - st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGFPE: - st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGSEGV: - st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGBUS: - st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - default: - st->print(", si_code=%d", si->si_code); - // no si_addr - } - - if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && + const siginfo_t* si = (const siginfo_t*)siginfo; + + os::Posix::print_siginfo_brief(st, si); + + if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && UseSharedSpaces) { FileMapInfo* mapinfo = FileMapInfo::current_info(); if (mapinfo->is_in_shared_space(si->si_addr)) { @@ -4278,7 +4232,8 @@ st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); } - st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); + st->print(", sa_mask[0]="); + os::Posix::print_signal_set_short(st, &sa.sa_mask); address rh = VMError::get_resetted_sighandler(sig); // May be, handler was resetted by VMError? @@ -4287,7 +4242,8 @@ sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK; } - st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); + st->print(", sa_flags="); + os::Posix::print_sa_flags(st, sa.sa_flags); // Check: is it our handler? if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) || diff --git a/src/os/posix/vm/os_posix.cpp b/src/os/posix/vm/os_posix.cpp --- a/src/os/posix/vm/os_posix.cpp +++ b/src/os/posix/vm/os_posix.cpp @@ -1,36 +1,44 @@ /* -* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. -* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. -* -* This code is free software; you can redistribute it and/or modify it -* under the terms of the GNU General Public License version 2 only, as -* published by the Free Software Foundation. -* -* This code is distributed in the hope that it will be useful, but WITHOUT -* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -* version 2 for more details (a copy is included in the LICENSE file that -* accompanied this code). -* -* You should have received a copy of the GNU General Public License version -* 2 along with this work; if not, write to the Free Software Foundation, -* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. -* -* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA -* or visit www.oracle.com if you need additional information or have any -* questions. -* -*/ + * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ +#include "utilities/globalDefinitions.hpp" #include "prims/jvm.h" #include "runtime/frame.inline.hpp" #include "runtime/os.hpp" #include "utilities/vmError.hpp" +#include #include #include #include +// Todo: provide a os::get_max_process_id() or similar. Number of processes +// may have been configured, can be read more accurately from proc fs etc. +#ifndef MAX_PID +#define MAX_PID INT_MAX +#endif +#define IS_VALID_PID(p) (p > 0 && p < MAX_PID) // Check core dump limit and report possible place where core can be found void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { @@ -156,7 +164,7 @@ if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); else st->print("%uk", rlim.rlim_cur >> 10); - //Isn't there on solaris + // Isn't there on solaris #ifndef TARGET_OS_FAMILY_solaris st->print(", NPROC "); getrlimit(RLIMIT_NPROC, &rlim); @@ -259,3 +267,456 @@ FILE* os::open(int fd, const char* mode) { return ::fdopen(fd, mode); } + + +// Returned string is a constant. For unknown signals "UNKNOWN" is returned. +const char* os::Posix::get_signal_name(int sig) { + + static const struct { + int sig; const char* name; + } + info[] = + { + { SIGABRT, "SIGABRT" }, +#ifdef SIGAIO + { SIGAIO, "SIGAIO" }, +#endif + { SIGALRM, "SIGALRM" }, +#ifdef SIGALRM1 + { SIGALRM1, "SIGALRM1" }, +#endif + { SIGBUS, "SIGBUS" }, +#ifdef SIGCANCEL + { SIGCANCEL, "SIGCANCEL" }, +#endif + { SIGCHLD, "SIGCHLD" }, +#ifdef SIGCLD + { SIGCLD, "SIGCLD" }, +#endif + { SIGCONT, "SIGCONT" }, +#ifdef SIGCPUFAIL + { SIGCPUFAIL, "SIGCPUFAIL" }, +#endif +#ifdef SIGDANGER + { SIGDANGER, "SIGDANGER" }, +#endif +#ifdef SIGDIL + { SIGDIL, "SIGDIL" }, +#endif +#ifdef SIGEMT + { SIGEMT, "SIGEMT" }, +#endif + { SIGFPE, "SIGFPE" }, +#ifdef SIGFREEZE + { SIGFREEZE, "SIGFREEZE" }, +#endif +#ifdef SIGGFAULT + { SIGGFAULT, "SIGGFAULT" }, +#endif +#ifdef SIGGRANT + { SIGGRANT, "SIGGRANT" }, +#endif + { SIGHUP, "SIGHUP" }, + { SIGILL, "SIGILL" }, + { SIGINT, "SIGINT" }, +#ifdef SIGIO + { SIGIO, "SIGIO" }, +#endif +#ifdef SIGIOINT + { SIGIOINT, "SIGIOINT" }, +#endif +#ifdef SIGIOT + { SIGIOT, "SIGIOT" }, +#endif +#ifdef SIGKAP + { SIGKAP, "SIGKAP" }, +#endif + { SIGKILL, "SIGKILL" }, +#ifdef SIGLOST + { SIGLOST, "SIGLOST" }, +#endif +#ifdef SIGLWP + { SIGLWP, "SIGLWP" }, +#endif +#ifdef SIGLWPTIMER + { SIGLWPTIMER, "SIGLWPTIMER" }, +#endif +#ifdef SIGMIGRATE + { SIGMIGRATE, "SIGMIGRATE" }, +#endif +#ifdef SIGMSG + { SIGMSG, "SIGMSG" }, +#endif + { SIGPIPE, "SIGPIPE" }, +#ifdef SIGPOLL + { SIGPOLL, "SIGPOLL" }, +#endif +#ifdef SIGPRE + { SIGPRE, "SIGPRE" }, +#endif + { SIGPROF, "SIGPROF" }, +#ifdef SIGPTY + { SIGPTY, "SIGPTY" }, +#endif +#ifdef SIGPWR + { SIGPWR, "SIGPWR" }, +#endif + { SIGQUIT, "SIGQUIT" }, +#ifdef SIGRECONFIG + { SIGRECONFIG, "SIGRECONFIG" }, +#endif +#ifdef SIGRECOVERY + { SIGRECOVERY, "SIGRECOVERY" }, +#endif +#ifdef SIGRESERVE + { SIGRESERVE, "SIGRESERVE" }, +#endif +#ifdef SIGRETRACT + { SIGRETRACT, "SIGRETRACT" }, +#endif +#ifdef SIGSAK + { SIGSAK, "SIGSAK" }, +#endif + { SIGSEGV, "SIGSEGV" }, +#ifdef SIGSOUND + { SIGSOUND, "SIGSOUND" }, +#endif + { SIGSTOP, "SIGSTOP" }, + { SIGSYS, "SIGSYS" }, +#ifdef SIGSYSERROR + { SIGSYSERROR, "SIGSYSERROR" }, +#endif +#ifdef SIGTALRM + { SIGTALRM, "SIGTALRM" }, +#endif + { SIGTERM, "SIGTERM" }, +#ifdef SIGTHAW + { SIGTHAW, "SIGTHAW" }, +#endif + { SIGTRAP, "SIGTRAP" }, +#ifdef SIGTSTP + { SIGTSTP, "SIGTSTP" }, +#endif + { SIGTTIN, "SIGTTIN" }, + { SIGTTOU, "SIGTTOU" }, +#ifdef SIGURG + { SIGURG, "SIGURG" }, +#endif + { SIGUSR1, "SIGUSR1" }, + { SIGUSR2, "SIGUSR2" }, +#ifdef SIGVIRT + { SIGVIRT, "SIGVIRT" }, +#endif + { SIGVTALRM, "SIGVTALRM" }, +#ifdef SIGWAITING + { SIGWAITING, "SIGWAITING" }, +#endif +#ifdef SIGWINCH + { SIGWINCH, "SIGWINCH" }, +#endif +#ifdef SIGWINDOW + { SIGWINDOW, "SIGWINDOW" }, +#endif + { SIGXCPU, "SIGXCPU" }, + { SIGXFSZ, "SIGXFSZ" }, +#ifdef SIGXRES + { SIGXRES, "SIGXRES" }, +#endif + { -1, NULL } + }; + + if (sig > 0) { + for (int idx = 0; info[idx].sig != -1; idx ++) { + if (info[idx].sig == sig) { + return info[idx].name; + } + } + } + + if (!is_valid_signal(sig)) { + return "INVALID"; + } + + return "UNKNOWN"; +} + +// A number high enough to contain all possible signal numbers. +#define MAX_SIGNAL_NUMBER 70 + +// Returns true if signal number is valid. +bool os::Posix::is_valid_signal(int sig) { + if (sig < 1 || sig > MAX_SIGNAL_NUMBER) { + return false; + } + + // MacOS not really POSIX compliant: sigaddset does not return + // an error for invalid signal numbers. However, MacOS does not + // support real time signals and simply seems to have just 33 + // signals with no holes in the signal range. +#ifdef __APPLE__ + return sig >= 1 && sig < NSIG; +#else + // Use sigaddset to check for signal validity. + sigset_t set; + if (sigaddset(&set, sig) == -1 && errno == EINVAL) { + return false; + } + return true; +#endif +} + +// Returns one-line short description of a signal set in a user provided buffer. +const char* os::Posix::describe_signal_set_short(const sigset_t* set, char* buffer, size_t size) { + for (int sig = 1; sig < MAX_SIGNAL_NUMBER; sig ++) { + const int rc = sigismember(set, sig); + if (rc == -1 && errno == EINVAL) { + // ignore invalid signal numbers + } else { + rc == 0 ? strncpy(buffer, "0", size) : strncpy(buffer, "1", size); + } + } + + return buffer; +} + +// Prints one-line description of a signal set. +void os::Posix::print_signal_set_short(outputStream* st, const sigset_t* set) { + char buf[MAX_SIGNAL_NUMBER * 10]; + os::Posix::describe_signal_set_short(set, buf, sizeof(buf)); + st->print(buf); +} + +// Writes one-line description of a combination of sigaction.sa_flags into a user +// provided buffer. Returns that buffer. +const char* os::Posix::describe_sa_flags(int flags, char* buffer, size_t size) { + char* p = buffer; + size_t remaining = size; + bool first = true; + int idx = 0; + + assert(buffer, "invalid argument"); + + if (size == 0) { + return buffer; + } + + strncpy(buffer, "none", size); + + const struct { + int i; + const char* s; + } flaginfo [] = { + { SA_NOCLDSTOP, "SA_NOCLDSTOP" }, + { SA_ONSTACK, "SA_ONSTACK" }, + { SA_RESETHAND, "SA_RESETHAND" }, + { SA_RESTART, "SA_RESTART" }, + { SA_SIGINFO, "SA_SIGINFO" }, + { SA_NOCLDWAIT, "SA_NOCLDWAIT" }, + { SA_NODEFER, "SA_NODEFER" }, +#ifdef AIX + { SA_ONSTACK, "SA_ONSTACK" }, + { SA_OLDSTYLE, "SA_OLDSTYLE" }, +#endif + { 0, NULL } + }; + + while (flaginfo[idx].s && remaining > 1) { + if (flags & flaginfo[idx].i) { + if (first) { + snprintf(p, remaining, "%s", flaginfo[idx].s); + first = false; + } else { + snprintf(p, remaining, "|%s", flaginfo[idx].s); + } + const size_t len = strlen(p); + p += len; + remaining -= len; + } + idx ++; + } + + buffer[size - 1] = '\0'; + + return buffer; +} + +// Prints one-line description of a combination of sigaction.sa_flags. +void os::Posix::print_sa_flags(outputStream* st, int flags) { + char buffer[0x100]; + os::Posix::describe_sa_flags(flags, buffer, sizeof(buffer)); + st->print(buffer); +} + +// Helper function for os::Posix::print_siginfo_...(): +// return a textual description for signal code. +struct enum_desc_t { + const char* s_name; + const char* s_desc; +}; + +static bool get_signal_code_description(const siginfo_t* si, enum_desc_t* out) { + + const struct { + int sig; int code; const char* s_code; const char* s_desc; + } t1 [] = { + { SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode." }, + { SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand." }, + { SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode." }, + { SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap." }, + { SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode." }, + { SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register." }, + { SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error." }, + { SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error." }, +#if defined(LINUX) && defined(IA64) + { SIGILL, ILL_BADIADDR, "ILL_BADIADDR", "Unimplemented instruction address" }, + { SIGILL, ILL_BREAK, "ILL_BREAK", "Application Break instruction" }, +#endif + { SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero." }, + { SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow." }, + { SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating-point divide by zero." }, + { SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating-point overflow." }, + { SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating-point underflow." }, + { SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating-point inexact result." }, + { SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating-point operation." }, + { SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range." }, + { SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object." }, + { SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for mapped object." }, +#ifdef AIX + // no explanation found what keyerr would be + { SIGSEGV, SEGV_KEYERR, "SEGV_KEYERR", "key error" }, +#endif +#if defined(IA64) && !defined(AIX) + { SIGSEGV, SEGV_PSTKOVF, "SEGV_PSTKOVF", "Paragraph stack overflow" }, +#endif + { SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment." }, + { SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Nonexistent physical address." }, + { SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object-specific hardware error." }, + { SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint." }, + { SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap." }, + { SIGCHLD, CLD_EXITED, "CLD_EXITED", "Child has exited." }, + { SIGCHLD, CLD_KILLED, "CLD_KILLE D", "Child has terminated abnormally and did not create a core file." }, + { SIGCHLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally and created a core file." }, + { SIGCHLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped." }, + { SIGCHLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped." }, + { SIGCHLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child has continued." }, +#ifndef __APPLE__ + { SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available." }, + { SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available." }, + { SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error." }, + { SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available." }, + { SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected. [Option End]" }, +#endif + { -1, -1, NULL, NULL } + }; + + // Codes valid in any signal context. + const struct { + int code; const char* s_code; const char* s_desc; + } t2 [] = { + { SI_USER, "SI_USER", "Signal sent by kill()." }, + { SI_QUEUE, "SI_QUEUE", "Signal sent by the sigqueue()." }, + { SI_TIMER, "SI_TIMER", "Signal generated by expiration of a timer set by timer_settime()." }, + { SI_ASYNCIO, "SI_ASYNCIO", "Signal generated by completion of an asynchronous I/O request." }, + { SI_MESGQ, "SI_MESGQ", "Signal generated by arrival of a message on an empty message queue." }, + // Linux specific +#ifdef SI_TKILL + { SI_TKILL, "SI_TKILL", "Signal sent by tkill (pthread_kill)" }, +#endif +#ifdef SI_DETHREAD + { SI_DETHREAD, "SI_DETHREAD", "Signal sent by execve() killing subsidiary threads" }, +#endif +#ifdef SI_KERNEL + { SI_KERNEL, "SI_KERNEL", "Signal sent by kernel." }, +#endif +#ifdef SI_SIGIO + { SI_SIGIO, "SI_SIGIO", "Signal sent by queued SIGIO" }, +#endif + +#ifdef AIX + { SI_UNDEFINED, "SI_UNDEFINED", "siginfo contains partial information" }, + { SI_EMPTY, "SI_EMPTY", "siginfo contains no useful information" }, +#endif + +#ifdef __sun + { SI_NOINFO, "SI_NOINFO", "No signal information" }, + { SI_RCTL, "SI_RCTL", "kernel generated signal via rctl action" }, + { SI_LWP, "SI_LWP", "Signal sent via lwp_kill" }, +#endif + + { -1, NULL, NULL } + }; + + const char* s_code = NULL; + const char* s_desc = NULL; + + for (int i = 0; t1[i].sig != -1; i ++) { + if (t1[i].sig == si->si_signo && t1[i].code == si->si_code) { + s_code = t1[i].s_code; + s_desc = t1[i].s_desc; + } + } + + if (s_code == NULL) { + for (int i = 0; t2[i].s_code != NULL; i ++) { + if (t2[i].code == si->si_code) { + s_code = t2[i].s_code; + s_desc = t2[i].s_desc; + } + } + } + + if (s_code == NULL) { + out->s_name = out->s_desc = "unknown"; + return false; + } + + out->s_name = s_code; + out->s_desc = s_desc; + + return true; +} + +// A POSIX conform, platform-independend siginfo print routine. +// Short print out on one line. +void os::Posix::print_siginfo_brief(outputStream* os, const siginfo_t* si) { + os->print("siginfo: "); + + if (!si) { + os->print(" "); + return; + } + + // See print_siginfo_full() for details. + const int sig = si->si_signo; + + os->print("si_signo: %d (%s)", sig, os::Posix::get_signal_name(sig)); + + enum_desc_t ed; + if (get_signal_code_description(si, &ed)) { + os->print(", si_code: %d (%s)", si->si_code, ed.s_name); + } else { + os->print(", si_code: %d (unknown)", si->si_code); + } + + if (si->si_errno) { + os->print(", si_errno: %d", si->si_errno); + } + + const int me = (int) ::getpid(); + const int pid = (int) si->si_pid; + + if (si->si_code == SI_USER || si->si_code == SI_QUEUE) { + if (IS_VALID_PID(pid) && pid != me) { + os->print(", sent from pid: %d (uid: %d)", pid, (int) si->si_uid); + } + } else if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL || + sig == SIGTRAP || sig == SIGFPE) { + os->print(", si_addr: " PTR_FORMAT, si->si_addr); +#ifndef __APPLE__ + } else if (sig == SIGPOLL) { + os->print(", si_band: " PTR64_FORMAT, (uint64_t)si->si_band); +#endif + } else if (sig == SIGCHLD) { + os->print_cr(", si_pid: %d, si_uid: %d, si_status: %d", (int) si->si_pid, si->si_uid, si->si_status); + } +} diff --git a/src/os/posix/vm/os_posix.hpp b/src/os/posix/vm/os_posix.hpp --- a/src/os/posix/vm/os_posix.hpp +++ b/src/os/posix/vm/os_posix.hpp @@ -34,8 +34,31 @@ static void print_libversion_info(outputStream* st); static void print_load_average(outputStream* st); +public: + + // Returns true if signal is valid. + static bool is_valid_signal(int sig); + + // Helper function, returns a string (e.g. "SIGILL") for a signal. + // Returned string is a constant. For unknown signals "UNKNOWN" is returned. + static const char* get_signal_name(int sig); + + // Returns one-line short description of a signal set in a user privided buffer. + static const char* describe_signal_set_short(const sigset_t* set, char* buffer, size_t size); + + // Prints a short one-line description of a signal set. + static void print_signal_set_short(outputStream* st, const sigset_t* set); + + // Writes one-line description of a combination of sigaction.sa_flags into a user + // provided buffer. Returns that buffer. + static const char* describe_sa_flags(int flags, char* buffer, size_t size); + + // Prints one-line description of a combination of sigaction.sa_flags. + static void print_sa_flags(outputStream* st, int flags); + + // A POSIX conform, platform-independend siginfo print routine. + static void print_siginfo_brief(outputStream* os, const siginfo_t* si); }; - -#endif +#endif // OS_POSIX_VM_OS_POSIX_HPP diff --git a/src/os/solaris/vm/os_solaris.cpp b/src/os/solaris/vm/os_solaris.cpp --- a/src/os/solaris/vm/os_solaris.cpp +++ b/src/os/solaris/vm/os_solaris.cpp @@ -2247,58 +2247,12 @@ (void) check_addr0(st); } -// Taken from /usr/include/sys/machsig.h Supposed to be architecture specific -// but they're the same for all the solaris architectures that we support. -const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", - "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", - "ILL_COPROC", "ILL_BADSTK" }; - -const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", - "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", - "FPE_FLTINV", "FPE_FLTSUB" }; - -const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; - -const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; - void os::print_siginfo(outputStream* st, void* siginfo) { - st->print("siginfo:"); - - const int buflen = 100; - char buf[buflen]; - siginfo_t *si = (siginfo_t*)siginfo; - st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); - char *err = strerror(si->si_errno); - if (si->si_errno != 0 && err != NULL) { - st->print("si_errno=%s", err); - } else { - st->print("si_errno=%d", si->si_errno); - } - const int c = si->si_code; - assert(c > 0, "unexpected si_code"); - switch (si->si_signo) { - case SIGILL: - st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGFPE: - st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGSEGV: - st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - case SIGBUS: - st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); - st->print(", si_addr=" PTR_FORMAT, si->si_addr); - break; - default: - st->print(", si_code=%d", si->si_code); - // no si_addr - } - - if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && + const siginfo_t* si = (const siginfo_t*)siginfo; + + os::Posix::print_siginfo_brief(st, si); + + if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && UseSharedSpaces) { FileMapInfo* mapinfo = FileMapInfo::current_info(); if (mapinfo->is_in_shared_space(si->si_addr)) { @@ -2368,7 +2322,8 @@ st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); } - st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); + st->print(", sa_mask[0]="); + os::Posix::print_signal_set_short(st, &sa.sa_mask); address rh = VMError::get_resetted_sighandler(sig); // May be, handler was resetted by VMError? @@ -2377,7 +2332,8 @@ sa.sa_flags = VMError::get_resetted_sigflags(sig); } - st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); + st->print(", sa_flags="); + os::Posix::print_sa_flags(st, sa.sa_flags); // Check: is it our handler? if(handler == CAST_FROM_FN_PTR(address, signalHandler) ||