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ruby--ruby/vm_dump.c
nobu 981f9c52c6 vm_dump.c: no methods in segv handler 
* vm_dump.c (rb_vm_bugreport): get rid of calling methods in sigsegv
  handler.  based on a patch by charliesome (Charlie Somerville)
  [ruby-core:49573] [Bug #7402]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38041 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-11-30 07:19:16 +00:00

722 lines
18 KiB
C
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/**********************************************************************
vm_dump.c -
$Author$
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include "ruby/ruby.h"
#include "addr2line.h"
#include "vm_core.h"
#include "internal.h"
/* see vm_insnhelper.h for the values */
#ifndef VMDEBUG
#define VMDEBUG 0
#endif
#define MAX_POSBUF 128
#define VM_CFP_CNT(th, cfp) \
((rb_control_frame_t *)((th)->stack + (th)->stack_size) - (rb_control_frame_t *)(cfp))
static void
control_frame_dump(rb_thread_t *th, rb_control_frame_t *cfp)
{
ptrdiff_t pc = -1;
ptrdiff_t ep = cfp->ep - th->stack;
char ep_in_heap = ' ';
char posbuf[MAX_POSBUF+1];
int line = 0;
const char *magic, *iseq_name = "-", *selfstr = "-", *biseq_name = "-";
VALUE tmp;
if (cfp->block_iseq != 0 && BUILTIN_TYPE(cfp->block_iseq) != T_NODE) {
biseq_name = ""; /* RSTRING(cfp->block_iseq->location.label)->ptr; */
}
if (ep < 0 || (size_t)ep > th->stack_size) {
ep = (ptrdiff_t)cfp->ep;
ep_in_heap = 'p';
}
switch (VM_FRAME_TYPE(cfp)) {
case VM_FRAME_MAGIC_TOP:
magic = "TOP";
break;
case VM_FRAME_MAGIC_METHOD:
magic = "METHOD";
break;
case VM_FRAME_MAGIC_CLASS:
magic = "CLASS";
break;
case VM_FRAME_MAGIC_BLOCK:
magic = "BLOCK";
break;
case VM_FRAME_MAGIC_CFUNC:
magic = "CFUNC";
break;
case VM_FRAME_MAGIC_PROC:
magic = "PROC";
break;
case VM_FRAME_MAGIC_LAMBDA:
magic = "LAMBDA";
break;
case VM_FRAME_MAGIC_IFUNC:
magic = "IFUNC";
break;
case VM_FRAME_MAGIC_EVAL:
magic = "EVAL";
break;
case 0:
magic = "------";
break;
default:
magic = "(none)";
break;
}
if (0) {
tmp = rb_inspect(cfp->self);
selfstr = StringValueCStr(tmp);
}
else {
selfstr = "";
}
if (cfp->iseq != 0) {
if (RUBY_VM_IFUNC_P(cfp->iseq)) {
iseq_name = "<ifunc>";
}
else {
pc = cfp->pc - cfp->iseq->iseq_encoded;
iseq_name = RSTRING_PTR(cfp->iseq->location.label);
line = rb_vm_get_sourceline(cfp);
if (line) {
snprintf(posbuf, MAX_POSBUF, "%s:%d", RSTRING_PTR(cfp->iseq->location.path), line);
}
}
}
else if (cfp->me) {
iseq_name = rb_id2name(cfp->me->def->original_id);
snprintf(posbuf, MAX_POSBUF, ":%s", iseq_name);
line = -1;
}
fprintf(stderr, "c:%04"PRIdPTRDIFF" ",
((rb_control_frame_t *)(th->stack + th->stack_size) - cfp));
if (pc == -1) {
fprintf(stderr, "p:---- ");
}
else {
fprintf(stderr, "p:%04"PRIdPTRDIFF" ", pc);
}
fprintf(stderr, "s:%04"PRIdPTRDIFF" ", cfp->sp - th->stack);
fprintf(stderr, ep_in_heap == ' ' ? "e:%06"PRIdPTRDIFF" " : "e:%06"PRIxPTRDIFF" ", ep % 10000);
fprintf(stderr, "%-6s", magic);
if (line) {
fprintf(stderr, " %s", posbuf);
}
if (VM_FRAME_TYPE_FINISH_P(cfp)) {
fprintf(stderr, " [FINISH]");
}
if (0) {
fprintf(stderr, " \t");
fprintf(stderr, "iseq: %-24s ", iseq_name);
fprintf(stderr, "self: %-24s ", selfstr);
fprintf(stderr, "%-1s ", biseq_name);
}
fprintf(stderr, "\n");
}
void
rb_vmdebug_stack_dump_raw(rb_thread_t *th, rb_control_frame_t *cfp)
{
#if 0
VALUE *sp = cfp->sp, *ep = cfp->ep;
VALUE *p, *st, *t;
fprintf(stderr, "-- stack frame ------------\n");
for (p = st = th->stack; p < sp; p++) {
fprintf(stderr, "%04ld (%p): %08"PRIxVALUE, (long)(p - st), p, *p);
t = (VALUE *)*p;
if (th->stack <= t && t < sp) {
fprintf(stderr, " (= %ld)", (long)((VALUE *)GC_GUARDED_PTR_REF(t) - th->stack));
}
if (p == ep)
fprintf(stderr, " <- ep");
fprintf(stderr, "\n");
}
#endif
fprintf(stderr, "-- Control frame information "
"-----------------------------------------------\n");
while ((void *)cfp < (void *)(th->stack + th->stack_size)) {
control_frame_dump(th, cfp);
cfp++;
}
fprintf(stderr, "\n");
}
void
rb_vmdebug_stack_dump_raw_current(void)
{
rb_thread_t *th = GET_THREAD();
rb_vmdebug_stack_dump_raw(th, th->cfp);
}
void
rb_vmdebug_env_dump_raw(rb_env_t *env, VALUE *ep)
{
int i;
fprintf(stderr, "-- env --------------------\n");
while (env) {
fprintf(stderr, "--\n");
for (i = 0; i < env->env_size; i++) {
fprintf(stderr, "%04d: %08"PRIxVALUE" (%p)", -env->local_size + i, env->env[i],
(void *)&env->env[i]);
if (&env->env[i] == ep)
fprintf(stderr, " <- ep");
fprintf(stderr, "\n");
}
if (env->prev_envval != 0) {
GetEnvPtr(env->prev_envval, env);
}
else {
env = 0;
}
}
fprintf(stderr, "---------------------------\n");
}
void
rb_vmdebug_proc_dump_raw(rb_proc_t *proc)
{
rb_env_t *env;
char *selfstr;
VALUE val = rb_inspect(proc->block.self);
selfstr = StringValueCStr(val);
fprintf(stderr, "-- proc -------------------\n");
fprintf(stderr, "self: %s\n", selfstr);
GetEnvPtr(proc->envval, env);
rb_vmdebug_env_dump_raw(env, proc->block.ep);
}
void
rb_vmdebug_stack_dump_th(VALUE thval)
{
rb_thread_t *th;
GetThreadPtr(thval, th);
rb_vmdebug_stack_dump_raw(th, th->cfp);
}
#if VMDEBUG > 2
/* copy from vm.c */
static VALUE *
vm_base_ptr(rb_control_frame_t *cfp)
{
rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
VALUE *bp = prev_cfp->sp + cfp->iseq->local_size + 1;
if (cfp->iseq->type == ISEQ_TYPE_METHOD) {
bp += 1;
}
return bp;
}
static void
vm_stack_dump_each(rb_thread_t *th, rb_control_frame_t *cfp)
{
int i;
VALUE rstr;
VALUE *sp = cfp->sp;
VALUE *ep = cfp->ep;
int argc = 0, local_size = 0;
const char *name;
rb_iseq_t *iseq = cfp->iseq;
if (iseq == 0) {
if (RUBYVM_CFUNC_FRAME_P(cfp)) {
name = rb_id2name(cfp->me->called_id);
}
else {
name = "?";
}
}
else if (RUBY_VM_IFUNC_P(iseq)) {
name = "<ifunc>";
}
else {
argc = iseq->argc;
local_size = iseq->local_size;
name = RSTRING_PTR(iseq->location.label);
}
/* stack trace header */
if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_METHOD ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_TOP ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_BLOCK ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CLASS ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_PROC ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_LAMBDA ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_IFUNC ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_EVAL) {
VALUE *ptr = ep - local_size;
control_frame_dump(th, cfp);
for (i = 0; i < argc; i++) {
rstr = rb_inspect(*ptr);
fprintf(stderr, " arg %2d: %8s (%p)\n", i, StringValueCStr(rstr),
(void *)ptr++);
}
for (; i < local_size - 1; i++) {
rstr = rb_inspect(*ptr);
fprintf(stderr, " local %2d: %8s (%p)\n", i, StringValueCStr(rstr),
(void *)ptr++);
}
ptr = vm_base_ptr(cfp);
for (; ptr < sp; ptr++, i++) {
if (*ptr == Qundef) {
rstr = rb_str_new2("undef");
}
else {
rstr = rb_inspect(*ptr);
}
fprintf(stderr, " stack %2d: %8s (%"PRIdPTRDIFF")\n", i, StringValueCStr(rstr),
(ptr - th->stack));
}
}
else if (VM_FRAME_TYPE_FINISH_P(cfp)) {
if ((th)->stack + (th)->stack_size > (VALUE *)(cfp + 1)) {
vm_stack_dump_each(th, cfp + 1);
}
else {
/* SDR(); */
}
}
else {
rb_bug("unsupport frame type: %08lx", VM_FRAME_TYPE(cfp));
}
}
#endif
void
rb_vmdebug_debug_print_register(rb_thread_t *th)
{
rb_control_frame_t *cfp = th->cfp;
ptrdiff_t pc = -1;
ptrdiff_t ep = cfp->ep - th->stack;
ptrdiff_t cfpi;
if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
pc = cfp->pc - cfp->iseq->iseq_encoded;
}
if (ep < 0 || (size_t)ep > th->stack_size) {
ep = -1;
}
cfpi = ((rb_control_frame_t *)(th->stack + th->stack_size)) - cfp;
fprintf(stderr, " [PC] %04"PRIdPTRDIFF", [SP] %04"PRIdPTRDIFF", [EP] %04"PRIdPTRDIFF", [CFP] %04"PRIdPTRDIFF"\n",
pc, (cfp->sp - th->stack), ep, cfpi);
}
void
rb_vmdebug_thread_dump_regs(VALUE thval)
{
rb_thread_t *th;
GetThreadPtr(thval, th);
rb_vmdebug_debug_print_register(th);
}
void
rb_vmdebug_debug_print_pre(rb_thread_t *th, rb_control_frame_t *cfp)
{
rb_iseq_t *iseq = cfp->iseq;
if (iseq != 0) {
VALUE *seq = iseq->iseq;
ptrdiff_t pc = cfp->pc - iseq->iseq_encoded;
int i;
for (i=0; i<(int)VM_CFP_CNT(th, cfp); i++) {
printf(" ");
}
printf("| ");
/* printf("%3"PRIdPTRDIFF" ", VM_CFP_CNT(th, cfp)); */
if (pc >= 0) {
rb_iseq_disasm_insn(0, seq, (size_t)pc, iseq, 0);
}
}
#if VMDEBUG > 3
fprintf(stderr, " (1)");
rb_vmdebug_debug_print_register(th);
#endif
}
void
rb_vmdebug_debug_print_post(rb_thread_t *th, rb_control_frame_t *cfp
#if OPT_STACK_CACHING
, VALUE reg_a, VALUE reg_b
#endif
)
{
#if VMDEBUG > 9
SDR2(cfp);
#endif
#if VMDEBUG > 3
fprintf(stderr, " (2)");
rb_vmdebug_debug_print_register(th);
#endif
/* stack_dump_raw(th, cfp); */
#if VMDEBUG > 2
/* stack_dump_thobj(th); */
vm_stack_dump_each(th, th->cfp);
#if OPT_STACK_CACHING
{
VALUE rstr;
rstr = rb_inspect(reg_a);
fprintf(stderr, " sc reg A: %s\n", StringValueCStr(rstr));
rstr = rb_inspect(reg_b);
fprintf(stderr, " sc reg B: %s\n", StringValueCStr(rstr));
}
#endif
printf
("--------------------------------------------------------------\n");
#endif
}
VALUE
rb_vmdebug_thread_dump_state(VALUE self)
{
rb_thread_t *th;
rb_control_frame_t *cfp;
GetThreadPtr(self, th);
cfp = th->cfp;
fprintf(stderr, "Thread state dump:\n");
fprintf(stderr, "pc : %p, sp : %p\n", (void *)cfp->pc, (void *)cfp->sp);
fprintf(stderr, "cfp: %p, ep : %p\n", (void *)cfp, (void *)cfp->ep);
return Qnil;
}
#if defined(__FreeBSD__) && defined(__OPTIMIZE__)
#undef HAVE_BACKTRACE
#endif
#ifndef HAVE_BACKTRACE
#define HAVE_BACKTRACE 0
#endif
#if HAVE_BACKTRACE
# include <execinfo.h>
#elif defined(_WIN32)
# include <imagehlp.h>
# ifndef SYMOPT_DEBUG
# define SYMOPT_DEBUG 0x80000000
# endif
# ifndef MAX_SYM_NAME
# define MAX_SYM_NAME 2000
typedef struct {
DWORD64 Offset;
WORD Segment;
ADDRESS_MODE Mode;
} ADDRESS64;
typedef struct {
DWORD64 Thread;
DWORD ThCallbackStack;
DWORD ThCallbackBStore;
DWORD NextCallback;
DWORD FramePointer;
DWORD64 KiCallUserMode;
DWORD64 KeUserCallbackDispatcher;
DWORD64 SystemRangeStart;
DWORD64 KiUserExceptionDispatcher;
DWORD64 StackBase;
DWORD64 StackLimit;
DWORD64 Reserved[5];
} KDHELP64;
typedef struct {
ADDRESS64 AddrPC;
ADDRESS64 AddrReturn;
ADDRESS64 AddrFrame;
ADDRESS64 AddrStack;
ADDRESS64 AddrBStore;
void *FuncTableEntry;
DWORD64 Params[4];
BOOL Far;
BOOL Virtual;
DWORD64 Reserved[3];
KDHELP64 KdHelp;
} STACKFRAME64;
typedef struct {
ULONG SizeOfStruct;
ULONG TypeIndex;
ULONG64 Reserved[2];
ULONG Index;
ULONG Size;
ULONG64 ModBase;
ULONG Flags;
ULONG64 Value;
ULONG64 Address;
ULONG Register;
ULONG Scope;
ULONG Tag;
ULONG NameLen;
ULONG MaxNameLen;
char Name[1];
} SYMBOL_INFO;
typedef struct {
DWORD SizeOfStruct;
void *Key;
DWORD LineNumber;
char *FileName;
DWORD64 Address;
} IMAGEHLP_LINE64;
typedef void *PREAD_PROCESS_MEMORY_ROUTINE64;
typedef void *PFUNCTION_TABLE_ACCESS_ROUTINE64;
typedef void *PGET_MODULE_BASE_ROUTINE64;
typedef void *PTRANSLATE_ADDRESS_ROUTINE64;
# endif
static void
dump_thread(void *arg)
{
HANDLE dbghelp;
BOOL (WINAPI *pSymInitialize)(HANDLE, const char *, BOOL);
BOOL (WINAPI *pSymCleanup)(HANDLE);
BOOL (WINAPI *pStackWalk64)(DWORD, HANDLE, HANDLE, STACKFRAME64 *, void *, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64);
DWORD64 (WINAPI *pSymGetModuleBase64)(HANDLE, DWORD64);
BOOL (WINAPI *pSymFromAddr)(HANDLE, DWORD64, DWORD64 *, SYMBOL_INFO *);
BOOL (WINAPI *pSymGetLineFromAddr64)(HANDLE, DWORD64, DWORD *, IMAGEHLP_LINE64 *);
HANDLE (WINAPI *pOpenThread)(DWORD, BOOL, DWORD);
DWORD tid = *(DWORD *)arg;
HANDLE ph;
HANDLE th;
dbghelp = LoadLibrary("dbghelp.dll");
if (!dbghelp) return;
pSymInitialize = (BOOL (WINAPI *)(HANDLE, const char *, BOOL))GetProcAddress(dbghelp, "SymInitialize");
pSymCleanup = (BOOL (WINAPI *)(HANDLE))GetProcAddress(dbghelp, "SymCleanup");
pStackWalk64 = (BOOL (WINAPI *)(DWORD, HANDLE, HANDLE, STACKFRAME64 *, void *, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64))GetProcAddress(dbghelp, "StackWalk64");
pSymGetModuleBase64 = (DWORD64 (WINAPI *)(HANDLE, DWORD64))GetProcAddress(dbghelp, "SymGetModuleBase64");
pSymFromAddr = (BOOL (WINAPI *)(HANDLE, DWORD64, DWORD64 *, SYMBOL_INFO *))GetProcAddress(dbghelp, "SymFromAddr");
pSymGetLineFromAddr64 = (BOOL (WINAPI *)(HANDLE, DWORD64, DWORD *, IMAGEHLP_LINE64 *))GetProcAddress(dbghelp, "SymGetLineFromAddr64");
pOpenThread = (HANDLE (WINAPI *)(DWORD, BOOL, DWORD))GetProcAddress(GetModuleHandle("kernel32.dll"), "OpenThread");
if (pSymInitialize && pSymCleanup && pStackWalk64 && pSymGetModuleBase64 &&
pSymFromAddr && pSymGetLineFromAddr64 && pOpenThread) {
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_DEBUG | SYMOPT_LOAD_LINES);
ph = GetCurrentProcess();
pSymInitialize(ph, NULL, TRUE);
th = pOpenThread(THREAD_SUSPEND_RESUME|THREAD_GET_CONTEXT, FALSE, tid);
if (th) {
if (SuspendThread(th) != (DWORD)-1) {
CONTEXT context;
memset(&context, 0, sizeof(context));
context.ContextFlags = CONTEXT_FULL;
if (GetThreadContext(th, &context)) {
char libpath[MAX_PATH];
char buf[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
SYMBOL_INFO *info = (SYMBOL_INFO *)buf;
DWORD mac;
STACKFRAME64 frame;
memset(&frame, 0, sizeof(frame));
#if defined(_M_AMD64) || defined(__x86_64__)
mac = IMAGE_FILE_MACHINE_AMD64;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrPC.Offset = context.Rip;
frame.AddrFrame.Mode = AddrModeFlat;
frame.AddrFrame.Offset = context.Rbp;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.Rsp;
#elif defined(_M_IA64) || defined(__ia64__)
mac = IMAGE_FILE_MACHINE_IA64;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrPC.Offset = context.StIIP;
frame.AddrBStore.Mode = AddrModeFlat;
frame.AddrBStore.Offset = context.RsBSP;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.IntSp;
#else /* i386 */
mac = IMAGE_FILE_MACHINE_I386;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrPC.Offset = context.Eip;
frame.AddrFrame.Mode = AddrModeFlat;
frame.AddrFrame.Offset = context.Ebp;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.Esp;
#endif
while (pStackWalk64(mac, ph, th, &frame, &context, NULL,
NULL, NULL, NULL)) {
DWORD64 addr = frame.AddrPC.Offset;
IMAGEHLP_LINE64 line;
DWORD64 displacement;
DWORD tmp;
if (addr == frame.AddrReturn.Offset || addr == 0 ||
frame.AddrReturn.Offset == 0)
break;
memset(buf, 0, sizeof(buf));
info->SizeOfStruct = sizeof(SYMBOL_INFO);
info->MaxNameLen = MAX_SYM_NAME;
if (pSymFromAddr(ph, addr, &displacement, info)) {
if (GetModuleFileName((HANDLE)(uintptr_t)pSymGetModuleBase64(ph, addr), libpath, sizeof(libpath)))
fprintf(stderr, "%s", libpath);
fprintf(stderr, "(%s+0x%I64x)",
info->Name, displacement);
}
fprintf(stderr, " [0x%p]", (void *)(VALUE)addr);
memset(&line, 0, sizeof(line));
line.SizeOfStruct = sizeof(line);
if (pSymGetLineFromAddr64(ph, addr, &tmp, &line))
fprintf(stderr, " %s:%lu", line.FileName, line.LineNumber);
fprintf(stderr, "\n");
}
}
ResumeThread(th);
}
CloseHandle(th);
}
pSymCleanup(ph);
}
FreeLibrary(dbghelp);
}
#endif
void
rb_vm_bugreport(void)
{
#ifdef __linux__
# define PROC_MAPS_NAME "/proc/self/maps"
#endif
#ifdef PROC_MAPS_NAME
enum {other_runtime_info = 1};
#else
enum {other_runtime_info = 0};
#endif
const rb_vm_t *const vm = GET_VM();
if (vm) {
SDR();
rb_backtrace_print_as_bugreport();
fputs("\n", stderr);
}
#if HAVE_BACKTRACE || defined(_WIN32)
fprintf(stderr, "-- C level backtrace information "
"-------------------------------------------\n");
{
#if defined __APPLE__
fprintf(stderr, "\n");
fprintf(stderr,
" See Crash Report log file under the one of following:\n"
" * ~/Library/Logs/CrashReporter\n"
" * /Library/Logs/CrashReporter\n"
" * ~/Library/Logs/DiagnosticReports\n"
" * /Library/Logs/DiagnosticReports\n"
" the more detail of.\n");
#elif HAVE_BACKTRACE
#define MAX_NATIVE_TRACE 1024
static void *trace[MAX_NATIVE_TRACE];
int n = backtrace(trace, MAX_NATIVE_TRACE);
char **syms = backtrace_symbols(trace, n);
if (syms) {
#ifdef USE_ELF
rb_dump_backtrace_with_lines(n, trace, syms);
#else
int i;
for (i=0; i<n; i++) {
fprintf(stderr, "%s\n", syms[i]);
}
#endif
free(syms);
}
#elif defined(_WIN32)
DWORD tid = GetCurrentThreadId();
HANDLE th = (HANDLE)_beginthread(dump_thread, 0, &tid);
if (th != (HANDLE)-1)
WaitForSingleObject(th, INFINITE);
#endif
}
fprintf(stderr, "\n");
#endif /* HAVE_BACKTRACE */
if (other_runtime_info || vm) {
fprintf(stderr, "-- Other runtime information "
"-----------------------------------------------\n\n");
}
if (vm) {
int i;
VALUE name;
long len;
const int max_name_length = 1024;
# define LIMITED_NAME_LENGTH(s) \
(((len = RSTRING_LEN(s)) > max_name_length) ? max_name_length : (int)len)
name = vm->progname;
fprintf(stderr, "* Loaded script: %.*s\n",
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
fprintf(stderr, "\n");
fprintf(stderr, "* Loaded features:\n\n");
for (i=0; i<RARRAY_LEN(vm->loaded_features); i++) {
name = RARRAY_PTR(vm->loaded_features)[i];
if (RB_TYPE_P(name, T_STRING)) {
fprintf(stderr, " %4d %.*s\n", i,
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
}
else {
fprintf(stderr, " %4d #<%s:%p>\n", i,
rb_class2name(CLASS_OF(name)), (void *)name);
}
}
fprintf(stderr, "\n");
}
{
#ifdef PROC_MAPS_NAME
{
FILE *fp = fopen(PROC_MAPS_NAME, "r");
if (fp) {
fprintf(stderr, "* Process memory map:\n\n");
while (!feof(fp)) {
char buff[0x100];
size_t rn = fread(buff, 1, 0x100, fp);
if (fwrite(buff, 1, rn, stderr) != rn)
break;
}
fclose(fp);
fprintf(stderr, "\n\n");
}
}
#endif /* __linux__ */
}
}
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