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ftmemsim-valgrind/callgrind/clo.c
Philippe Waroquiers 83a535e431 Enhance callgrind option --collect-system. 
- The command option --collect-systime has been enhanced to specify
    the unit used to record the elapsed time spent during system calls.
    The command option now accepts the values no|yes|msec|usec|nsec,
    where yes is a synonym of msec.  When giving the value nsec, the
    system cpu time of system calls is also recorded.

Note that the nsec option is not supported on Darwin.
2019-10-12 18:12:04 +02:00

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/*
This file is part of Callgrind, a Valgrind tool for call graph
profiling programs.
Copyright (C) 2002-2017, Josef Weidendorfer (Josef.Weidendorfer@gmx.de)
This tool is derived from and contains lot of code from Cachegrind
Copyright (C) 2002-2017 Nicholas Nethercote (njn@valgrind.org)
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 the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
The GNU General Public License is contained in the file COPYING.
*/
#include "config.h" // for VG_PREFIX
#include "global.h"
/*------------------------------------------------------------*/
/*--- Function specific configuration options ---*/
/*------------------------------------------------------------*/
/* Special value for separate_callers: automatic = adaptive */
#define CONFIG_AUTO -1
#define CONFIG_DEFAULT -1
#define CONFIG_FALSE 0
#define CONFIG_TRUE 1
/* Logging configuration for a function */
struct _fn_config {
Int dump_before;
Int dump_after;
Int zero_before;
Int toggle_collect;
Int skip; /* Handle CALL to this function as JMP (= Skip)? */
Int group; /* don't change caller dependency inside group !=0 */
Int pop_on_jump;
Int separate_callers; /* separate logging dependent on caller */
Int separate_recursions; /* separate logging of rec. levels */
#if CLG_ENABLE_DEBUG
Int verbosity; /* Change debug verbosity level while in function */
#endif
};
/* Configurations for function name prefix patterns.
* Currently, only very limit patterns are possible:
* Exact prefix patterns and "*::" are allowed.
* E.g.
* - "abc" matches all functions starting with "abc".
* - "abc*::def" matches all functions starting with "abc" and
* starting with "def" after the first "::" separator.
* - "*::print(" matches C++ methods "print" in all classes
* without namespace. I.e. "*" doesn't match a "::".
*
* We build a trie from patterns, and for a given function, we
* go down the tree and apply all non-default configurations.
*/
#define NODE_DEGREE 30
/* node of compressed trie search structure */
typedef struct _config_node config_node;
struct _config_node {
Int length;
fn_config* config;
config_node* sub_node[NODE_DEGREE];
config_node* next;
config_node* wild_star;
config_node* wild_char;
HChar name[1];
};
/* root of trie */
static config_node* fn_configs = 0;
static __inline__
fn_config* new_fnc(void)
{
fn_config* fnc = (fn_config*) CLG_MALLOC("cl.clo.nf.1",
sizeof(fn_config));
fnc->dump_before = CONFIG_DEFAULT;
fnc->dump_after = CONFIG_DEFAULT;
fnc->zero_before = CONFIG_DEFAULT;
fnc->toggle_collect = CONFIG_DEFAULT;
fnc->skip = CONFIG_DEFAULT;
fnc->pop_on_jump = CONFIG_DEFAULT;
fnc->group = CONFIG_DEFAULT;
fnc->separate_callers = CONFIG_DEFAULT;
fnc->separate_recursions = CONFIG_DEFAULT;
#if CLG_ENABLE_DEBUG
fnc->verbosity = CONFIG_DEFAULT;
#endif
return fnc;
}
static config_node* new_config(const HChar* name, int length)
{
int i;
config_node* node = (config_node*) CLG_MALLOC("cl.clo.nc.1",
sizeof(config_node) + length);
for(i=0;i<length;i++) {
if (name[i] == 0) break;
node->name[i] = name[i];
}
node->name[i] = 0;
node->length = length;
node->config = 0;
for(i=0;i<NODE_DEGREE;i++)
node->sub_node[i] = 0;
node->next = 0;
node->wild_char = 0;
node->wild_star = 0;
CLG_DEBUG(3, " new_config('%s', len %d)\n", node->name, length);
return node;
}
static __inline__
Bool is_wild(HChar n)
{
return (n == '*') || (n == '?');
}
/* Recursively build up function matching tree (prefix tree).
* Returns function config object for pattern <name>
* and starting at tree node <*pnode>.
*
* Tree nodes (config_node) are created as needed,
* tree root is stored into <*pnode>, and the created
* leaf (fn_config) for the given pattern is returned.
*/
static fn_config* get_fnc2(config_node* node, const HChar* name)
{
config_node *new_sub, *n, *nprev;
int offset, len;
CLG_DEBUG(3, " get_fnc2(%p, '%s')\n", node, name);
if (name[0] == 0) {
if (!node->config) node->config = new_fnc();
return node->config;
}
if (is_wild(*name)) {
if (*name == '*') {
while(name[1] == '*') name++;
new_sub = node->wild_star;
}
else
new_sub = node->wild_char;
if (!new_sub) {
new_sub = new_config(name, 1);
if (*name == '*')
node->wild_star = new_sub;
else
node->wild_char = new_sub;
}
return get_fnc2( new_sub, name+1);
}
n = node->sub_node[ name[0]%NODE_DEGREE ];
nprev = 0;
len = 0;
while(n) {
for(len=0; name[len] == n->name[len]; len++);
if (len>0) break;
nprev = n;
n = n->next;
}
if (!n) {
len = 1;
while(name[len] && (!is_wild(name[len]))) len++;
new_sub = new_config(name, len);
new_sub->next = node->sub_node[ name[0]%NODE_DEGREE ];
node->sub_node[ name[0]%NODE_DEGREE ] = new_sub;
if (name[len] == 0) {
new_sub->config = new_fnc();
return new_sub->config;
}
/* recurse on wildcard */
return get_fnc2( new_sub, name+len);
}
if (len < n->length) {
/* split up the subnode <n> */
config_node *new_node;
int i;
new_node = new_config(n->name, len);
if (nprev)
nprev->next = new_node;
else
node->sub_node[ n->name[0]%NODE_DEGREE ] = new_node;
new_node->next = n->next;
new_node->sub_node[ n->name[len]%NODE_DEGREE ] = n;
for(i=0, offset=len; offset < n->length; i++, offset++)
n->name[i] = n->name[offset];
n->name[i] = 0;
n->length = i;
name += len;
offset = 0;
while(name[offset] && (!is_wild(name[offset]))) offset++;
new_sub = new_config(name, offset);
/* this sub_node of new_node could already be set: chain! */
new_sub->next = new_node->sub_node[ name[0]%NODE_DEGREE ];
new_node->sub_node[ name[0]%NODE_DEGREE ] = new_sub;
if (name[offset]==0) {
new_sub->config = new_fnc();
return new_sub->config;
}
/* recurse on wildcard */
return get_fnc2( new_sub, name+offset);
}
name += n->length;
if (name[0] == 0) {
/* name and node name are the same */
if (!n->config) n->config = new_fnc();
return n->config;
}
offset = 1;
while(name[offset] && (!is_wild(name[offset]))) offset++;
new_sub = new_config(name, offset);
new_sub->next = n->sub_node[ name[0]%NODE_DEGREE ];
n->sub_node[ name[0]%NODE_DEGREE ] = new_sub;
return get_fnc2(new_sub, name+offset);
}
static void print_config_node(int depth, int hash, config_node* node)
{
config_node* n;
int i;
if (node != fn_configs) {
const HChar sp[] = " ";
if (depth>40) depth=40;
VG_(printf)("%s", sp+40-depth);
if (hash >=0) VG_(printf)(" [hash %2d]", hash);
else if (hash == -2) VG_(printf)(" [wildc ?]");
else if (hash == -3) VG_(printf)(" [wildc *]");
VG_(printf)(" '%s' (len %d)\n", node->name, node->length);
}
for(i=0;i<NODE_DEGREE;i++) {
n = node->sub_node[i];
while(n) {
print_config_node(depth+1, i, n);
n = n->next;
}
}
if (node->wild_char) print_config_node(depth+1, -2, node->wild_char);
if (node->wild_star) print_config_node(depth+1, -3, node->wild_star);
}
/* get a function config for a name pattern (from command line) */
static fn_config* get_fnc(const HChar* name)
{
fn_config* fnc;
CLG_DEBUG(3, " +get_fnc(%s)\n", name);
if (fn_configs == 0)
fn_configs = new_config(name, 0);
fnc = get_fnc2(fn_configs, name);
CLG_DEBUGIF(3) {
CLG_DEBUG(3, " -get_fnc(%s):\n", name);
print_config_node(3, -1, fn_configs);
}
return fnc;
}
static void update_fn_config1(fn_node* fn, fn_config* fnc)
{
if (fnc->dump_before != CONFIG_DEFAULT)
fn->dump_before = (fnc->dump_before == CONFIG_TRUE);
if (fnc->dump_after != CONFIG_DEFAULT)
fn->dump_after = (fnc->dump_after == CONFIG_TRUE);
if (fnc->zero_before != CONFIG_DEFAULT)
fn->zero_before = (fnc->zero_before == CONFIG_TRUE);
if (fnc->toggle_collect != CONFIG_DEFAULT)
fn->toggle_collect = (fnc->toggle_collect == CONFIG_TRUE);
if (fnc->skip != CONFIG_DEFAULT)
fn->skip = (fnc->skip == CONFIG_TRUE);
if (fnc->pop_on_jump != CONFIG_DEFAULT)
fn->pop_on_jump = (fnc->pop_on_jump == CONFIG_TRUE);
if (fnc->group != CONFIG_DEFAULT)
fn->group = fnc->group;
if (fnc->separate_callers != CONFIG_DEFAULT)
fn->separate_callers = fnc->separate_callers;
if (fnc->separate_recursions != CONFIG_DEFAULT)
fn->separate_recursions = fnc->separate_recursions;
#if CLG_ENABLE_DEBUG
if (fnc->verbosity != CONFIG_DEFAULT)
fn->verbosity = fnc->verbosity;
#endif
}
/* Recursively go down the function matching tree,
* looking for a match to <name>. For every matching leaf,
* <fn> is updated with the pattern config.
*/
static void update_fn_config2(fn_node* fn, const HChar* name,
config_node* node)
{
config_node* n;
CLG_DEBUG(3, " update_fn_config2('%s', node '%s'): \n",
name, node->name);
if ((*name == 0) && node->config) {
CLG_DEBUG(3, " found!\n");
update_fn_config1(fn, node->config);
return;
}
n = node->sub_node[ name[0]%NODE_DEGREE ];
while(n) {
if (VG_(strncmp)(name, n->name, n->length)==0) break;
n = n->next;
}
if (n) {
CLG_DEBUG(3, " '%s' matching at hash %d\n",
n->name, name[0]%NODE_DEGREE);
update_fn_config2(fn, name+n->length, n);
}
if (node->wild_char) {
CLG_DEBUG(3, " skip '%c' for wildcard '?'\n", *name);
update_fn_config2(fn, name+1, node->wild_char);
}
if (node->wild_star) {
CLG_DEBUG(3, " wildcard '*'\n");
while(*name) {
update_fn_config2(fn, name, node->wild_star);
name++;
}
update_fn_config2(fn, name, node->wild_star);
}
}
/* Update function config according to configs of name prefixes */
void CLG_(update_fn_config)(fn_node* fn)
{
CLG_DEBUG(3, " update_fn_config('%s')\n", fn->name);
if (fn_configs)
update_fn_config2(fn, fn->name, fn_configs);
}
/*--------------------------------------------------------------------*/
/*--- Command line processing ---*/
/*--------------------------------------------------------------------*/
Bool CLG_(process_cmd_line_option)(const HChar* arg)
{
const HChar* tmp_str;
if VG_BOOL_CLO(arg, "--skip-plt", CLG_(clo).skip_plt) {}
else if VG_BOOL_CLO(arg, "--collect-jumps", CLG_(clo).collect_jumps) {}
/* compatibility alias, deprecated option */
else if VG_BOOL_CLO(arg, "--trace-jump", CLG_(clo).collect_jumps) {}
else if VG_BOOL_CLO(arg, "--combine-dumps", CLG_(clo).combine_dumps) {}
else if VG_BOOL_CLO(arg, "--collect-atstart", CLG_(clo).collect_atstart) {}
else if VG_BOOL_CLO(arg, "--instr-atstart", CLG_(clo).instrument_atstart) {}
else if VG_BOOL_CLO(arg, "--separate-threads", CLG_(clo).separate_threads) {}
else if VG_BOOL_CLO(arg, "--compress-strings", CLG_(clo).compress_strings) {}
else if VG_BOOL_CLO(arg, "--compress-mangled", CLG_(clo).compress_mangled) {}
else if VG_BOOL_CLO(arg, "--compress-pos", CLG_(clo).compress_pos) {}
else if VG_STR_CLO(arg, "--fn-skip", tmp_str) {
fn_config* fnc = get_fnc(tmp_str);
fnc->skip = CONFIG_TRUE;
}
else if VG_STR_CLO(arg, "--dump-before", tmp_str) {
fn_config* fnc = get_fnc(tmp_str);
fnc->dump_before = CONFIG_TRUE;
}
else if VG_STR_CLO(arg, "--zero-before", tmp_str) {
fn_config* fnc = get_fnc(tmp_str);
fnc->zero_before = CONFIG_TRUE;
}
else if VG_STR_CLO(arg, "--dump-after", tmp_str) {
fn_config* fnc = get_fnc(tmp_str);
fnc->dump_after = CONFIG_TRUE;
}
else if VG_STR_CLO(arg, "--toggle-collect", tmp_str) {
fn_config* fnc = get_fnc(tmp_str);
fnc->toggle_collect = CONFIG_TRUE;
/* defaults to initial collection off */
CLG_(clo).collect_atstart = False;
}
else if VG_INT_CLO(arg, "--separate-recs", CLG_(clo).separate_recursions) {}
/* change handling of a jump between functions to ret+call */
else if VG_XACT_CLO(arg, "--pop-on-jump", CLG_(clo).pop_on_jump, True) {}
else if VG_STR_CLO( arg, "--pop-on-jump", tmp_str) {
fn_config* fnc = get_fnc(tmp_str);
fnc->pop_on_jump = CONFIG_TRUE;
}
#if CLG_ENABLE_DEBUG
else if VG_INT_CLO(arg, "--ct-verbose", CLG_(clo).verbose) {}
else if VG_INT_CLO(arg, "--ct-vstart", CLG_(clo).verbose_start) {}
else if VG_STREQN(12, arg, "--ct-verbose") {
fn_config* fnc;
HChar* s;
UInt n = VG_(strtoll10)(arg+12, &s);
if ((n <= 0) || *s != '=') return False;
fnc = get_fnc(s+1);
fnc->verbosity = n;
}
#endif
else if VG_XACT_CLO(arg, "--separate-callers=auto",
CLG_(clo).separate_callers, CONFIG_AUTO) {}
else if VG_INT_CLO( arg, "--separate-callers",
CLG_(clo).separate_callers) {}
else if VG_STREQN(10, arg, "--fn-group") {
fn_config* fnc;
HChar* s;
UInt n = VG_(strtoll10)(arg+10, &s);
if ((n <= 0) || *s != '=') return False;
fnc = get_fnc(s+1);
fnc->group = n;
}
else if VG_STREQN(18, arg, "--separate-callers") {
fn_config* fnc;
HChar* s;
UInt n = VG_(strtoll10)(arg+18, &s);
if ((n <= 0) || *s != '=') return False;
fnc = get_fnc(s+1);
fnc->separate_callers = n;
}
else if VG_STREQN(15, arg, "--separate-recs") {
fn_config* fnc;
HChar* s;
UInt n = VG_(strtoll10)(arg+15, &s);
if ((n <= 0) || *s != '=') return False;
fnc = get_fnc(s+1);
fnc->separate_recursions = n;
}
else if VG_STR_CLO(arg, "--callgrind-out-file", CLG_(clo).out_format) {}
else if VG_BOOL_CLO(arg, "--mangle-names", CLG_(clo).mangle_names) {}
else if VG_BOOL_CLO(arg, "--skip-direct-rec",
CLG_(clo).skip_direct_recursion) {}
else if VG_BOOL_CLO(arg, "--dump-bbs", CLG_(clo).dump_bbs) {}
else if VG_BOOL_CLO(arg, "--dump-line", CLG_(clo).dump_line) {}
else if VG_BOOL_CLO(arg, "--dump-instr", CLG_(clo).dump_instr) {}
else if VG_BOOL_CLO(arg, "--dump-bb", CLG_(clo).dump_bb) {}
else if VG_INT_CLO( arg, "--dump-every-bb", CLG_(clo).dump_every_bb) {}
else if VG_BOOL_CLO(arg, "--collect-alloc", CLG_(clo).collect_alloc) {}
else if VG_XACT_CLO(arg, "--collect-systime=no",
CLG_(clo).collect_systime, systime_no) {}
else if VG_XACT_CLO(arg, "--collect-systime=msec",
CLG_(clo).collect_systime, systime_msec) {}
else if VG_XACT_CLO(arg, "--collect-systime=yes", /* backward compatibility. */
CLG_(clo).collect_systime, systime_msec) {}
else if VG_XACT_CLO(arg, "--collect-systime=usec",
CLG_(clo).collect_systime, systime_usec) {}
else if VG_XACT_CLO(arg, "--collect-systime=nsec",
CLG_(clo).collect_systime, systime_nsec) {
# if defined(VGO_darwin)
VG_(fmsg_bad_option)
(arg,
"--collect-systime=nsec not supported on darwin\n");
# endif
}
else if VG_BOOL_CLO(arg, "--collect-bus", CLG_(clo).collect_bus) {}
/* for option compatibility with cachegrind */
else if VG_BOOL_CLO(arg, "--cache-sim", CLG_(clo).simulate_cache) {}
/* compatibility alias, deprecated option */
else if VG_BOOL_CLO(arg, "--simulate-cache", CLG_(clo).simulate_cache) {}
/* for option compatibility with cachegrind */
else if VG_BOOL_CLO(arg, "--branch-sim", CLG_(clo).simulate_branch) {}
else {
Bool isCachesimOption = (*CLG_(cachesim).parse_opt)(arg);
/* cache simulator is used if a simulator option is given */
if (isCachesimOption)
CLG_(clo).simulate_cache = True;
return isCachesimOption;
}
return True;
}
void CLG_(print_usage)(void)
{
VG_(printf)(
"\n dump creation options:\n"
" --callgrind-out-file=<f> Output file name [callgrind.out.%%p]\n"
" --dump-line=no|yes Dump source lines of costs? [yes]\n"
" --dump-instr=no|yes Dump instruction address of costs? [no]\n"
" --compress-strings=no|yes Compress strings in profile dump? [yes]\n"
" --compress-pos=no|yes Compress positions in profile dump? [yes]\n"
" --combine-dumps=no|yes Concat all dumps into same file [no]\n"
#if CLG_EXPERIMENTAL
" --compress-events=no|yes Compress events in profile dump? [no]\n"
" --dump-bb=no|yes Dump basic block address of costs? [no]\n"
" --dump-bbs=no|yes Dump basic block info? [no]\n"
" --dump-skipped=no|yes Dump info on skipped functions in calls? [no]\n"
" --mangle-names=no|yes Mangle separation into names? [yes]\n"
#endif
"\n activity options (for interactivity use callgrind_control):\n"
" --dump-every-bb=<count> Dump every <count> basic blocks [0=never]\n"
" --dump-before=<func> Dump when entering function\n"
" --zero-before=<func> Zero all costs when entering function\n"
" --dump-after=<func> Dump when leaving function\n"
#if CLG_EXPERIMENTAL
" --dump-objs=no|yes Dump static object information [no]\n"
#endif
"\n data collection options:\n"
" --instr-atstart=no|yes Do instrumentation at callgrind start [yes]\n"
" --collect-atstart=no|yes Collect at process/thread start [yes]\n"
" --toggle-collect=<func> Toggle collection on enter/leave function\n"
" --collect-jumps=no|yes Collect jumps? [no]\n"
" --collect-bus=no|yes Collect global bus events? [no]\n"
#if CLG_EXPERIMENTAL
" --collect-alloc=no|yes Collect memory allocation info? [no]\n"
#endif
" --collect-systime=no|yes|msec|usec|nsec Collect system call time info? [no]\n"
" no Do not collect system call time info.\n"
" msec|yes Collect syscount, syscall elapsed time (milli-seconds).\n"
" usec Collect syscount, syscall elapsed time (micro-seconds).\n"
" nsec Collect syscount, syscall elapsed and syscall cpu time (nano-seconds).\n"
"\n cost entity separation options:\n"
" --separate-threads=no|yes Separate data per thread [no]\n"
" --separate-callers=<n> Separate functions by call chain length [0]\n"
" --separate-callers<n>=<f> Separate <n> callers for function <f>\n"
" --separate-recs=<n> Separate function recursions up to level [2]\n"
" --separate-recs<n>=<f> Separate <n> recursions for function <f>\n"
" --skip-plt=no|yes Ignore calls to/from PLT sections? [yes]\n"
" --skip-direct-rec=no|yes Ignore direct recursions? [yes]\n"
" --fn-skip=<function> Ignore calls to/from function?\n"
#if CLG_EXPERIMENTAL
" --fn-group<no>=<func> Put function into separation group <no>\n"
#endif
"\n simulation options:\n"
" --branch-sim=no|yes Do branch prediction simulation [no]\n"
" --cache-sim=no|yes Do cache simulation [no]\n"
);
(*CLG_(cachesim).print_opts)();
// VG_(printf)("\n"
// " For full callgrind documentation, see\n"
// " "VG_PREFIX"/share/doc/callgrind/html/callgrind.html\n\n");
}
void CLG_(print_debug_usage)(void)
{
VG_(printf)(
#if CLG_ENABLE_DEBUG
" --ct-verbose=<level> Verbosity of standard debug output [0]\n"
" --ct-vstart=<BB number> Only be verbose after basic block [0]\n"
" --ct-verbose<level>=<func> Verbosity while in <func>\n"
#else
" (none)\n"
#endif
);
}
void CLG_(set_clo_defaults)(void)
{
/* Default values for command line arguments */
/* dump options */
CLG_(clo).out_format = 0;
CLG_(clo).combine_dumps = False;
CLG_(clo).compress_strings = True;
CLG_(clo).compress_mangled = False;
CLG_(clo).compress_events = False;
CLG_(clo).compress_pos = True;
CLG_(clo).mangle_names = True;
CLG_(clo).dump_line = True;
CLG_(clo).dump_instr = False;
CLG_(clo).dump_bb = False;
CLG_(clo).dump_bbs = False;
CLG_(clo).dump_every_bb = 0;
/* Collection */
CLG_(clo).separate_threads = False;
CLG_(clo).collect_atstart = True;
CLG_(clo).collect_jumps = False;
CLG_(clo).collect_alloc = False;
CLG_(clo).collect_systime = systime_no;
CLG_(clo).collect_bus = False;
CLG_(clo).skip_plt = True;
CLG_(clo).separate_callers = 0;
CLG_(clo).separate_recursions = 2;
CLG_(clo).skip_direct_recursion = False;
/* Instrumentation */
CLG_(clo).instrument_atstart = True;
CLG_(clo).simulate_cache = False;
CLG_(clo).simulate_branch = False;
/* Call graph */
CLG_(clo).pop_on_jump = False;
#if CLG_ENABLE_DEBUG
CLG_(clo).verbose = 0;
CLG_(clo).verbose_start = 0;
#endif
}
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