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debugger.c
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debugger.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* debugger.c: Vim script debugger functions
*/
#include "vim.h"
#if defined(FEAT_EVAL) || defined(PROTO)
static int debug_greedy = FALSE; // batch mode debugging: don't save
// and restore typeahead.
static void do_setdebugtracelevel(char_u *arg);
static void do_checkbacktracelevel(void);
static void do_showbacktrace(char_u *cmd);
static char_u *debug_oldval = NULL; // old and newval for debug expressions
static char_u *debug_newval = NULL;
static int debug_expr = 0; // use debug_expr
int
has_watchexpr(void)
{
return debug_expr;
}
/*
* do_debug(): Debug mode.
* Repeatedly get Ex commands, until told to continue normal execution.
*/
void
do_debug(char_u *cmd)
{
int save_msg_scroll = msg_scroll;
int save_State = State;
int save_did_emsg = did_emsg;
int save_cmd_silent = cmd_silent;
int save_msg_silent = msg_silent;
int save_emsg_silent = emsg_silent;
int save_redir_off = redir_off;
tasave_T typeaheadbuf;
int typeahead_saved = FALSE;
int save_ignore_script = 0;
int save_ex_normal_busy;
int n;
char_u *cmdline = NULL;
char_u *p;
char_u *sname;
char *tail = NULL;
static int last_cmd = 0;
#define CMD_CONT 1
#define CMD_NEXT 2
#define CMD_STEP 3
#define CMD_FINISH 4
#define CMD_QUIT 5
#define CMD_INTERRUPT 6
#define CMD_BACKTRACE 7
#define CMD_FRAME 8
#define CMD_UP 9
#define CMD_DOWN 10
#ifdef ALWAYS_USE_GUI
// Can't do this when there is no terminal for input/output.
if (!gui.in_use)
{
// Break as soon as possible.
debug_break_level = 9999;
return;
}
#endif
// Make sure we are in raw mode and start termcap mode. Might have side
// effects...
settmode(TMODE_RAW);
starttermcap();
++RedrawingDisabled; // don't redisplay the window
++no_wait_return; // don't wait for return
did_emsg = FALSE; // don't use error from debugged stuff
cmd_silent = FALSE; // display commands
msg_silent = FALSE; // display messages
emsg_silent = FALSE; // display error messages
redir_off = TRUE; // don't redirect debug commands
save_timeout_for_debugging(); // disable regexp timeout flag
State = MODE_NORMAL;
debug_mode = TRUE;
if (!debug_did_msg)
msg(_("Entering Debug mode. Type \"cont\" to continue."));
if (debug_oldval != NULL)
{
smsg(_("Oldval = \"%s\""), debug_oldval);
VIM_CLEAR(debug_oldval);
}
if (debug_newval != NULL)
{
smsg(_("Newval = \"%s\""), debug_newval);
VIM_CLEAR(debug_newval);
}
sname = estack_sfile(ESTACK_NONE);
if (sname != NULL)
msg((char *)sname);
vim_free(sname);
if (SOURCING_LNUM != 0)
smsg(_("line %ld: %s"), SOURCING_LNUM, cmd);
else
smsg(_("cmd: %s"), cmd);
// Repeat getting a command and executing it.
for (;;)
{
msg_scroll = TRUE;
need_wait_return = FALSE;
// Save the current typeahead buffer and replace it with an empty one.
// This makes sure we get input from the user here and don't interfere
// with the commands being executed. Reset "ex_normal_busy" to avoid
// the side effects of using ":normal". Save the stuff buffer and make
// it empty. Set ignore_script to avoid reading from script input.
save_ex_normal_busy = ex_normal_busy;
ex_normal_busy = 0;
if (!debug_greedy)
{
save_typeahead(&typeaheadbuf);
typeahead_saved = TRUE;
save_ignore_script = ignore_script;
ignore_script = TRUE;
}
// don't debug any function call, e.g. from an expression mapping
n = debug_break_level;
debug_break_level = -1;
vim_free(cmdline);
cmdline = getcmdline_prompt('>', NULL, 0, EXPAND_NOTHING, NULL);
debug_break_level = n;
if (typeahead_saved)
{
restore_typeahead(&typeaheadbuf, TRUE);
ignore_script = save_ignore_script;
}
ex_normal_busy = save_ex_normal_busy;
cmdline_row = msg_row;
msg_starthere();
if (cmdline != NULL)
{
// If this is a debug command, set "last_cmd".
// If not, reset "last_cmd".
// For a blank line use previous command.
p = skipwhite(cmdline);
if (*p != NUL)
{
switch (*p)
{
case 'c': last_cmd = CMD_CONT;
tail = "ont";
break;
case 'n': last_cmd = CMD_NEXT;
tail = "ext";
break;
case 's': last_cmd = CMD_STEP;
tail = "tep";
break;
case 'f':
last_cmd = 0;
if (p[1] == 'r')
{
last_cmd = CMD_FRAME;
tail = "rame";
}
else
{
last_cmd = CMD_FINISH;
tail = "inish";
}
break;
case 'q': last_cmd = CMD_QUIT;
tail = "uit";
break;
case 'i': last_cmd = CMD_INTERRUPT;
tail = "nterrupt";
break;
case 'b': last_cmd = CMD_BACKTRACE;
if (p[1] == 't')
tail = "t";
else
tail = "acktrace";
break;
case 'w': last_cmd = CMD_BACKTRACE;
tail = "here";
break;
case 'u': last_cmd = CMD_UP;
tail = "p";
break;
case 'd': last_cmd = CMD_DOWN;
tail = "own";
break;
default: last_cmd = 0;
}
if (last_cmd != 0)
{
// Check that the tail matches.
++p;
while (*p != NUL && *p == *tail)
{
++p;
++tail;
}
if (ASCII_ISALPHA(*p) && last_cmd != CMD_FRAME)
last_cmd = 0;
}
}
if (last_cmd != 0)
{
// Execute debug command: decide where to break next and
// return.
switch (last_cmd)
{
case CMD_CONT:
debug_break_level = -1;
break;
case CMD_NEXT:
debug_break_level = ex_nesting_level;
break;
case CMD_STEP:
debug_break_level = 9999;
break;
case CMD_FINISH:
debug_break_level = ex_nesting_level - 1;
break;
case CMD_QUIT:
got_int = TRUE;
debug_break_level = -1;
break;
case CMD_INTERRUPT:
got_int = TRUE;
debug_break_level = 9999;
// Do not repeat ">interrupt" cmd, continue stepping.
last_cmd = CMD_STEP;
break;
case CMD_BACKTRACE:
do_showbacktrace(cmd);
continue;
case CMD_FRAME:
if (*p == NUL)
{
do_showbacktrace(cmd);
}
else
{
p = skipwhite(p);
do_setdebugtracelevel(p);
}
continue;
case CMD_UP:
debug_backtrace_level++;
do_checkbacktracelevel();
continue;
case CMD_DOWN:
debug_backtrace_level--;
do_checkbacktracelevel();
continue;
}
// Going out reset backtrace_level
debug_backtrace_level = 0;
break;
}
// don't debug this command
n = debug_break_level;
debug_break_level = -1;
(void)do_cmdline(cmdline, getexline, NULL,
DOCMD_VERBOSE|DOCMD_EXCRESET);
debug_break_level = n;
}
lines_left = Rows - 1;
}
vim_free(cmdline);
if (RedrawingDisabled > 0)
--RedrawingDisabled;
--no_wait_return;
redraw_all_later(UPD_NOT_VALID);
need_wait_return = FALSE;
msg_scroll = save_msg_scroll;
restore_timeout_for_debugging();
lines_left = Rows - 1;
State = save_State;
debug_mode = FALSE;
did_emsg = save_did_emsg;
cmd_silent = save_cmd_silent;
msg_silent = save_msg_silent;
emsg_silent = save_emsg_silent;
redir_off = save_redir_off;
// Only print the message again when typing a command before coming back
// here.
debug_did_msg = TRUE;
}
static int
get_maxbacktrace_level(char_u *sname)
{
char *p, *q;
int maxbacktrace = 0;
if (sname == NULL)
return 0;
p = (char *)sname;
while ((q = strstr(p, "..")) != NULL)
{
p = q + 2;
maxbacktrace++;
}
return maxbacktrace;
}
static void
do_setdebugtracelevel(char_u *arg)
{
int level;
level = atoi((char *)arg);
if (*arg == '+' || level < 0)
debug_backtrace_level += level;
else
debug_backtrace_level = level;
do_checkbacktracelevel();
}
static void
do_checkbacktracelevel(void)
{
if (debug_backtrace_level < 0)
{
debug_backtrace_level = 0;
msg(_("frame is zero"));
}
else
{
char_u *sname = estack_sfile(ESTACK_NONE);
int max = get_maxbacktrace_level(sname);
if (debug_backtrace_level > max)
{
debug_backtrace_level = max;
smsg(_("frame at highest level: %d"), max);
}
vim_free(sname);
}
}
static void
do_showbacktrace(char_u *cmd)
{
char_u *sname;
char *cur;
char *next;
int i = 0;
int max;
sname = estack_sfile(ESTACK_NONE);
max = get_maxbacktrace_level(sname);
if (sname != NULL)
{
cur = (char *)sname;
while (!got_int)
{
next = strstr(cur, "..");
if (next != NULL)
*next = NUL;
if (i == max - debug_backtrace_level)
smsg("->%d %s", max - i, cur);
else
smsg(" %d %s", max - i, cur);
++i;
if (next == NULL)
break;
*next = '.';
cur = next + 2;
}
vim_free(sname);
}
if (SOURCING_LNUM != 0)
smsg(_("line %ld: %s"), (long)SOURCING_LNUM, cmd);
else
smsg(_("cmd: %s"), cmd);
}
/*
* ":debug".
*/
void
ex_debug(exarg_T *eap)
{
int debug_break_level_save = debug_break_level;
debug_break_level = 9999;
do_cmdline_cmd(eap->arg);
debug_break_level = debug_break_level_save;
}
static char_u *debug_breakpoint_name = NULL;
static linenr_T debug_breakpoint_lnum;
/*
* When debugging or a breakpoint is set on a skipped command, no debug prompt
* is shown by do_one_cmd(). This situation is indicated by debug_skipped, and
* debug_skipped_name is then set to the source name in the breakpoint case. If
* a skipped command decides itself that a debug prompt should be displayed, it
* can do so by calling dbg_check_skipped().
*/
static int debug_skipped;
static char_u *debug_skipped_name;
/*
* Go to debug mode when a breakpoint was encountered or "ex_nesting_level" is
* at or below the break level. But only when the line is actually
* executed. Return TRUE and set breakpoint_name for skipped commands that
* decide to execute something themselves.
* Called from do_one_cmd() before executing a command.
*/
void
dbg_check_breakpoint(exarg_T *eap)
{
char_u *p;
debug_skipped = FALSE;
if (debug_breakpoint_name != NULL)
{
if (!eap->skip)
{
// replace K_SNR with "<SNR>"
if (debug_breakpoint_name[0] == K_SPECIAL
&& debug_breakpoint_name[1] == KS_EXTRA
&& debug_breakpoint_name[2] == KE_SNR)
p = (char_u *)"<SNR>";
else
p = (char_u *)"";
smsg(_("Breakpoint in \"%s%s\" line %ld"),
p,
debug_breakpoint_name + (*p == NUL ? 0 : 3),
(long)debug_breakpoint_lnum);
debug_breakpoint_name = NULL;
do_debug(eap->cmd);
}
else
{
debug_skipped = TRUE;
debug_skipped_name = debug_breakpoint_name;
debug_breakpoint_name = NULL;
}
}
else if (ex_nesting_level <= debug_break_level)
{
if (!eap->skip)
do_debug(eap->cmd);
else
{
debug_skipped = TRUE;
debug_skipped_name = NULL;
}
}
}
/*
* Go to debug mode if skipped by dbg_check_breakpoint() because eap->skip was
* set. Return TRUE when the debug mode is entered this time.
*/
int
dbg_check_skipped(exarg_T *eap)
{
int prev_got_int;
if (!debug_skipped)
return FALSE;
// Save the value of got_int and reset it. We don't want a previous
// interruption cause flushing the input buffer.
prev_got_int = got_int;
got_int = FALSE;
debug_breakpoint_name = debug_skipped_name;
// eap->skip is TRUE
eap->skip = FALSE;
(void)dbg_check_breakpoint(eap);
eap->skip = TRUE;
got_int |= prev_got_int;
return TRUE;
}
/*
* The list of breakpoints: dbg_breakp.
* This is a grow-array of structs.
*/
struct debuggy
{
int dbg_nr; // breakpoint number
int dbg_type; // DBG_FUNC, DBG_FILE or DBG_EXPR
char_u *dbg_name; // function, expression or file name
regprog_T *dbg_prog; // regexp program
linenr_T dbg_lnum; // line number in function or file
int dbg_forceit; // ! used
#ifdef FEAT_EVAL
typval_T *dbg_val; // last result of watchexpression
#endif
int dbg_level; // stored nested level for expr
};
static garray_T dbg_breakp = {0, 0, sizeof(struct debuggy), 4, NULL};
#define BREAKP(idx) (((struct debuggy *)dbg_breakp.ga_data)[idx])
#define DEBUGGY(gap, idx) (((struct debuggy *)gap->ga_data)[idx])
static int last_breakp = 0; // nr of last defined breakpoint
static int has_expr_breakpoint = FALSE;
#ifdef FEAT_PROFILE
// Profiling uses file and func names similar to breakpoints.
static garray_T prof_ga = {0, 0, sizeof(struct debuggy), 4, NULL};
// Profiling caches results of regexp lookups for function/script name.
#define N_PROF_HTAB 2
static hashtab_T prof_cache[N_PROF_HTAB];
#define PROF_HTAB_FUNCS 0
#define PROF_HTAB_FILES 1
static int prof_cache_initialized;
typedef struct profentry_S
{
char pen_flags; // cache data booleans: profiling, forceit
char_u pen_name[1]; // actually longer
} profentry_T;
#define PEN_FLAG_PROFILING 1
#define PEN_FLAG_FORCEIT 2
#define PEN_SET_PROFILING(pe) ((pe)->pen_flags |= PEN_FLAG_PROFILING)
#define PEN_SET_FORCEIT(pe) ((pe)->pen_flags |= PEN_FLAG_FORCEIT)
#define PEN_IS_PROFILING(pe) (((pe)->pen_flags & PEN_FLAG_PROFILING) != 0)
#define PEN_IS_FORCEIT(pe) (((pe)->pen_flags & PEN_FLAG_FORCEIT) != 0)
#define PE2HIKEY(pe) ((pe)->pen_name)
#define HIKEY2PE(p) ((profentry_T *)((p) - (offsetof(profentry_T, pen_name))))
#define HI2PE(hi) HIKEY2PE((hi)->hi_key)
static void prof_clear_cache(void);
#define PROF_CLEAR_CACHE(gap) do {if ((gap) == &prof_ga) prof_clear_cache();} while (0)
// Can enable to get some info about profile caching
// #define PROF_CACHE_LOG
#else
#define PROF_CLEAR_CACHE(gap) do {} while (0)
#endif
#define DBG_FUNC 1
#define DBG_FILE 2
#define DBG_EXPR 3
static linenr_T debuggy_find(int file,char_u *fname, linenr_T after, garray_T *gap, int *fp);
/*
* Evaluate the "bp->dbg_name" expression and return the result.
* Disables error messages.
*/
static typval_T *
eval_expr_no_emsg(struct debuggy *bp)
{
typval_T *tv;
// Disable error messages, a bad expression would make Vim unusable.
++emsg_off;
tv = eval_expr(bp->dbg_name, NULL);
--emsg_off;
return tv;
}
/*
* Parse the arguments of ":profile", ":breakadd" or ":breakdel" and put them
* in the entry just after the last one in dbg_breakp. Note that "dbg_name"
* is allocated.
* Returns FAIL for failure.
*/
static int
dbg_parsearg(
char_u *arg,
garray_T *gap) // either &dbg_breakp or &prof_ga
{
char_u *p = arg;
char_u *q;
struct debuggy *bp;
int here = FALSE;
if (ga_grow(gap, 1) == FAIL)
return FAIL;
bp = &DEBUGGY(gap, gap->ga_len);
// Find "func" or "file".
if (STRNCMP(p, "func", 4) == 0)
bp->dbg_type = DBG_FUNC;
else if (STRNCMP(p, "file", 4) == 0)
bp->dbg_type = DBG_FILE;
else if (
#ifdef FEAT_PROFILE
gap != &prof_ga &&
#endif
STRNCMP(p, "here", 4) == 0)
{
if (curbuf->b_ffname == NULL)
{
emsg(_(e_no_file_name));
return FAIL;
}
bp->dbg_type = DBG_FILE;
here = TRUE;
}
else if (
#ifdef FEAT_PROFILE
gap != &prof_ga &&
#endif
STRNCMP(p, "expr", 4) == 0)
bp->dbg_type = DBG_EXPR;
else
{
semsg(_(e_invalid_argument_str), p);
return FAIL;
}
p = skipwhite(p + 4);
// Find optional line number.
if (here)
bp->dbg_lnum = curwin->w_cursor.lnum;
else if (
#ifdef FEAT_PROFILE
gap != &prof_ga &&
#endif
VIM_ISDIGIT(*p))
{
bp->dbg_lnum = getdigits(&p);
p = skipwhite(p);
}
else
bp->dbg_lnum = 0;
// Find the function or file name. Don't accept a function name with ().
if ((!here && *p == NUL)
|| (here && *p != NUL)
|| (bp->dbg_type == DBG_FUNC && strstr((char *)p, "()") != NULL))
{
semsg(_(e_invalid_argument_str), arg);
return FAIL;
}
if (bp->dbg_type == DBG_FUNC)
bp->dbg_name = vim_strsave(STRNCMP(p, "g:", 2) == 0 ? p + 2 : p);
else if (here)
bp->dbg_name = vim_strsave(curbuf->b_ffname);
else if (bp->dbg_type == DBG_EXPR)
{
bp->dbg_name = vim_strsave(p);
if (bp->dbg_name != NULL)
bp->dbg_val = eval_expr_no_emsg(bp);
}
else
{
// Expand the file name in the same way as do_source(). This means
// doing it twice, so that $DIR/file gets expanded when $DIR is
// "~/dir".
q = expand_env_save(p);
if (q == NULL)
return FAIL;
p = expand_env_save(q);
vim_free(q);
if (p == NULL)
return FAIL;
if (*p != '*')
{
bp->dbg_name = fix_fname(p);
vim_free(p);
}
else
bp->dbg_name = p;
}
if (bp->dbg_name == NULL)
return FAIL;
return OK;
}
/*
* ":breakadd". Also used for ":profile".
*/
void
ex_breakadd(exarg_T *eap)
{
struct debuggy *bp;
char_u *pat;
garray_T *gap;
gap = &dbg_breakp;
#ifdef FEAT_PROFILE
if (eap->cmdidx == CMD_profile)
gap = &prof_ga;
#endif
if (dbg_parsearg(eap->arg, gap) != OK)
return;
bp = &DEBUGGY(gap, gap->ga_len);
bp->dbg_forceit = eap->forceit;
if (bp->dbg_type != DBG_EXPR)
{
pat = file_pat_to_reg_pat(bp->dbg_name, NULL, NULL, FALSE);
if (pat != NULL)
{
bp->dbg_prog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
vim_free(pat);
}
if (pat == NULL || bp->dbg_prog == NULL)
vim_free(bp->dbg_name);
else
{
if (bp->dbg_lnum == 0) // default line number is 1
bp->dbg_lnum = 1;
#ifdef FEAT_PROFILE
if (eap->cmdidx != CMD_profile)
#endif
{
DEBUGGY(gap, gap->ga_len).dbg_nr = ++last_breakp;
++debug_tick;
}
++gap->ga_len;
PROF_CLEAR_CACHE(gap);
}
}
else
{
// DBG_EXPR
DEBUGGY(gap, gap->ga_len++).dbg_nr = ++last_breakp;
++debug_tick;
if (gap == &dbg_breakp)
has_expr_breakpoint = TRUE;
}
}
/*
* ":debuggreedy".
*/
void
ex_debuggreedy(exarg_T *eap)
{
if (eap->addr_count == 0 || eap->line2 != 0)
debug_greedy = TRUE;
else
debug_greedy = FALSE;
}
static void
update_has_expr_breakpoint(void)
{
int i;
has_expr_breakpoint = FALSE;
for (i = 0; i < dbg_breakp.ga_len; ++i)
if (BREAKP(i).dbg_type == DBG_EXPR)
{
has_expr_breakpoint = TRUE;
break;
}
}
/*
* Return TRUE if there is any expression breakpoint.
*/
int
debug_has_expr_breakpoint(void)
{
return has_expr_breakpoint;
}
/*
* ":breakdel" and ":profdel".
*/
void
ex_breakdel(exarg_T *eap)
{
struct debuggy *bp, *bpi;
int nr;
int todel = -1;
int del_all = FALSE;
int i;
linenr_T best_lnum = 0;
garray_T *gap;
gap = &dbg_breakp;
if (eap->cmdidx == CMD_profdel)
{
#ifdef FEAT_PROFILE
gap = &prof_ga;
#else
ex_ni(eap);
return;
#endif
}
if (vim_isdigit(*eap->arg))
{
// ":breakdel {nr}"
nr = atol((char *)eap->arg);
for (i = 0; i < gap->ga_len; ++i)
if (DEBUGGY(gap, i).dbg_nr == nr)
{
todel = i;
break;
}
}
else if (*eap->arg == '*')
{
todel = 0;
del_all = TRUE;
}
else
{
// ":breakdel {func|file|expr} [lnum] {name}"
if (dbg_parsearg(eap->arg, gap) == FAIL)
return;
bp = &DEBUGGY(gap, gap->ga_len);
for (i = 0; i < gap->ga_len; ++i)
{
bpi = &DEBUGGY(gap, i);
if (bp->dbg_type == bpi->dbg_type
&& STRCMP(bp->dbg_name, bpi->dbg_name) == 0
&& (bp->dbg_lnum == bpi->dbg_lnum
|| (bp->dbg_lnum == 0
&& (best_lnum == 0
|| bpi->dbg_lnum < best_lnum))))
{
todel = i;
best_lnum = bpi->dbg_lnum;
}
}
vim_free(bp->dbg_name);
}
if (todel < 0)
{
semsg(_(e_breakpoint_not_found_str), eap->arg);
return;
}
while (gap->ga_len > 0)
{
vim_free(DEBUGGY(gap, todel).dbg_name);
#ifdef FEAT_EVAL
if (DEBUGGY(gap, todel).dbg_type == DBG_EXPR
&& DEBUGGY(gap, todel).dbg_val != NULL)
free_tv(DEBUGGY(gap, todel).dbg_val);
#endif
vim_regfree(DEBUGGY(gap, todel).dbg_prog);
--gap->ga_len;
if (todel < gap->ga_len)
mch_memmove(&DEBUGGY(gap, todel), &DEBUGGY(gap, todel + 1),
(gap->ga_len - todel) * sizeof(struct debuggy));
#ifdef FEAT_PROFILE
if (eap->cmdidx == CMD_breakdel)
#endif
++debug_tick;
if (!del_all)
break;
}
PROF_CLEAR_CACHE(gap);
// If all breakpoints were removed clear the array.
if (gap->ga_len == 0)
ga_clear(gap);
if (gap == &dbg_breakp)
update_has_expr_breakpoint();
}
/*
* ":breaklist".
*/
void
ex_breaklist(exarg_T *eap UNUSED)
{
struct debuggy *bp;
int i;
if (dbg_breakp.ga_len == 0)
{
msg(_("No breakpoints defined"));
return;
}
for (i = 0; i < dbg_breakp.ga_len; ++i)
{
bp = &BREAKP(i);
if (bp->dbg_type == DBG_FILE)
home_replace(NULL, bp->dbg_name, NameBuff, MAXPATHL, TRUE);
if (bp->dbg_type != DBG_EXPR)
smsg(_("%3d %s %s line %ld"),
bp->dbg_nr,
bp->dbg_type == DBG_FUNC ? "func" : "file",
bp->dbg_type == DBG_FUNC ? bp->dbg_name : NameBuff,
(long)bp->dbg_lnum);
else
smsg(_("%3d expr %s"),
bp->dbg_nr, bp->dbg_name);
}
}
/*
* Find a breakpoint for a function or sourced file.
* Returns line number at which to break; zero when no matching breakpoint.
*/
linenr_T
dbg_find_breakpoint(
int file, // TRUE for a file, FALSE for a function
char_u *fname, // file or function name
linenr_T after) // after this line number
{
return debuggy_find(file, fname, after, &dbg_breakp, NULL);
}
#if defined(FEAT_PROFILE) || defined(PROTO)
#if defined(PROF_CACHE_LOG)
static int count_lookups[2];
#endif
/*
* Return TRUE if profiling is on for a function or sourced file.
* Cache the results of debuggy_find().
* Cache is cleared whenever prof_ga.ga_len is changed.
*/
int
has_profiling(
int file, // TRUE for a file, FALSE for a function
char_u *fname, // file or function name
int *fp, // return: forceit
hash_T *hashp) // use/return fname hash, may be NULL
{
if (prof_ga.ga_len == 0 || !prof_cache_initialized)
return debuggy_find(file, fname, (linenr_T)0, &prof_ga, fp)
!= (linenr_T)0;
hash_T hash;
if (hashp != NULL)
{
hash = *hashp;
if (hash == 0)
{
hash = hash_hash(fname);
*hashp = hash;
}
}
else
hash = hash_hash(fname);
hashtab_T *ht = &prof_cache[file ? PROF_HTAB_FILES : PROF_HTAB_FUNCS];
hashitem_T *hi = hash_lookup(ht, fname, hash);
profentry_T *pe;
if (HASHITEM_EMPTY(hi))
{
pe = alloc(offsetof(profentry_T, pen_name) + STRLEN(fname) + 1);
if (pe == NULL)
return FALSE;
STRCPY(pe->pen_name, fname);
pe->pen_flags = 0;
// run debuggy_find and capture return and forceit
int f;
int lnum = debuggy_find(file, fname, (linenr_T)0, &prof_ga, &f);
if (lnum)
{
PEN_SET_PROFILING(pe);
if (f)
PEN_SET_FORCEIT(pe);
}
hash_add_item(ht, hi, pe->pen_name, hash);
#if defined(PROF_CACHE_LOG)
ch_log(NULL, "has_profiling: %s %s forceit %s, profile %s",
file ? "file" : "func", fname,
PEN_IS_FORCEIT(pe) ? "true" : "false",
PEN_IS_PROFILING(pe) ? "true" : "false");
#endif
}
else
pe = HI2PE(hi);
if (fp)
*fp = PEN_IS_FORCEIT(pe);
#if defined(PROF_CACHE_LOG)
count_lookups[file ? PROF_HTAB_FILES : PROF_HTAB_FUNCS]++;
#endif
return PEN_IS_PROFILING(pe);
}