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/* vi:set ts=8 sts=4 sw=4:
 *
 * 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.
 */

/*
 * ex_cmds2.c: some more functions for command line commands
 */

#include "vim.h"
#include "version.h"

static void	cmd_source __ARGS((char_u *fname, exarg_T *eap));

#ifdef FEAT_EVAL
/* Growarray to store info about already sourced scripts.
 * For Unix also store the dev/ino, so that we don't have to stat() each
 * script when going through the list. */
typedef struct scriptitem_S
{
    char_u	*sn_name;
# ifdef UNIX
    int		sn_dev_valid;
    dev_t	sn_dev;
    ino_t	sn_ino;
# endif
# ifdef FEAT_PROFILE
    int		sn_prof_on;	/* TRUE when script is/was profiled */
    int		sn_pr_force;	/* forceit: profile functions in this script */
    proftime_T	sn_pr_child;	/* time set when going into first child */
    int		sn_pr_nest;	/* nesting for sn_pr_child */
    /* profiling the script as a whole */
    int		sn_pr_count;	/* nr of times sourced */
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    proftime_T	sn_pr_total;	/* time spent in script + children */
    proftime_T	sn_pr_self;	/* time spent in script itself */
    proftime_T	sn_pr_start;	/* time at script start */
    proftime_T	sn_pr_children; /* time in children after script start */
    /* profiling the script per line */
    garray_T	sn_prl_ga;	/* things stored for every line */
    proftime_T	sn_prl_start;	/* start time for current line */
    proftime_T	sn_prl_children; /* time spent in children for this line */
    proftime_T	sn_prl_wait;	/* wait start time for current line */
    int		sn_prl_idx;	/* index of line being timed; -1 if none */
    int		sn_prl_execed;	/* line being timed was executed */
# endif
} scriptitem_T;

static garray_T script_items = {0, 0, sizeof(scriptitem_T), 4, NULL};
#define SCRIPT_ITEM(id) (((scriptitem_T *)script_items.ga_data)[(id) - 1])

# ifdef FEAT_PROFILE
/* Struct used in sn_prl_ga for every line of a script. */
typedef struct sn_prl_S
{
    int		snp_count;	/* nr of times line was executed */
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    proftime_T	sn_prl_total;	/* time spent in a line + children */
    proftime_T	sn_prl_self;	/* time spent in a line itself */
} sn_prl_T;

#  define PRL_ITEM(si, idx)	(((sn_prl_T *)(si)->sn_prl_ga.ga_data)[(idx)])
# endif
#endif

#if defined(FEAT_EVAL) || defined(PROTO)
static int debug_greedy = FALSE;	/* batch mode debugging: don't save
					   and restore typeahead. */

/*
 * do_debug(): Debug mode.
 * Repeatedly get Ex commands, until told to continue normal execution.
 */
    void
do_debug(cmd)
    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;
# ifdef FEAT_EX_EXTRA
    int		save_ex_normal_busy;
# endif
    int		n;
    char_u	*cmdline = NULL;
    char_u	*p;
    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

#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 */

    State = NORMAL;
#ifdef FEAT_SNIFF
    want_sniff_request = 0;    /* No K_SNIFF wanted */
#endif

    if (!debug_did_msg)
	MSG(_("Entering Debug mode.  Type \"cont\" to continue."));
    if (sourcing_name != NULL)
	msg(sourcing_name);
    if (sourcing_lnum != 0)
	smsg((char_u *)_("line %ld: %s"), (long)sourcing_lnum, cmd);
    else
	smsg((char_u *)_("cmd: %s"), cmd);

    /*
     * Repeat getting a command and executing it.
     */
    for (;;)
    {
	msg_scroll = TRUE;
	need_wait_return = FALSE;
#ifdef FEAT_SNIFF
	ProcessSniffRequests();
#endif
	/* 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. */
# ifdef FEAT_EX_EXTRA
	save_ex_normal_busy = ex_normal_busy;
	ex_normal_busy = 0;
# endif
	if (!debug_greedy)
	    save_typeahead(&typeaheadbuf);
	    typeahead_saved = TRUE;
	    save_ignore_script = ignore_script;
	    ignore_script = TRUE;
	}
	cmdline = getcmdline_prompt('>', NULL, 0, EXPAND_NOTHING, NULL);
	if (typeahead_saved)
	{
	    restore_typeahead(&typeaheadbuf);
	    ignore_script = save_ignore_script;
	}
# ifdef FEAT_EX_EXTRA
	ex_normal_busy = save_ex_normal_busy;
# endif

	cmdline_row = msg_row;
	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 = CMD_FINISH;
			      tail = "inish";
			      break;
		    case 'q': last_cmd = CMD_QUIT;
			      tail = "uit";
			      break;
		    case 'i': last_cmd = CMD_INTERRUPT;
			      tail = "nterrupt";
			      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 = 0;
		}
	    }

	    if (last_cmd != 0)
	    {
		/* Execute debug command: decided 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;
		}
		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;

	    vim_free(cmdline);
	}
	lines_left = Rows - 1;
    }
    vim_free(cmdline);

    --RedrawingDisabled;
    --no_wait_return;
    redraw_all_later(NOT_VALID);
    need_wait_return = FALSE;
    msg_scroll = save_msg_scroll;
    lines_left = Rows - 1;
    State = save_State;
    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;
}

/*
 * ":debug".
 */
    void
ex_debug(eap)
    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(eap)
    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] == (int)KE_SNR)
		p = (char_u *)"<SNR>";
	    else
		p = (char_u *)"";
	    smsg((char_u *)_("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(eap)
    exarg_T	*eap;
{
    int		prev_got_int;

    if (debug_skipped)
    {
	/*
	 * 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;
    }
    return FALSE;
}

/*
 * 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 or DBG_FILE */
    char_u	*dbg_name;	/* function or file name */
    regprog_T	*dbg_prog;	/* regexp program */
    linenr_T	dbg_lnum;	/* line number in function or file */
    int		dbg_forceit;	/* ! used */
};

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 */

#ifdef FEAT_PROFILE
/* Profiling uses file and func names similar to breakpoints. */
static garray_T prof_ga = {0, 0, sizeof(struct debuggy), 4, NULL};
#endif
#define DBG_FUNC	1
#define DBG_FILE	2

static int dbg_parsearg __ARGS((char_u *arg, garray_T *gap));
static linenr_T debuggy_find __ARGS((int file,char_u *fname, linenr_T after, garray_T *gap, int *fp));
 * 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(arg, gap)
    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_noname));
	    return FAIL;
	}
	bp->dbg_type = DBG_FILE;
	here = TRUE;
    }
    else
    {
	EMSG2(_(e_invarg2), 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))
    {
	EMSG2(_(e_invarg2), arg);
	return FAIL;
    }

    if (bp->dbg_type == DBG_FUNC)
	bp->dbg_name = vim_strsave(p);
    else if (here)
	bp->dbg_name = vim_strsave(curbuf->b_ffname);
    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".
 */
    void
ex_breakadd(eap)
    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)
	bp = &DEBUGGY(gap, gap->ga_len);
	bp->dbg_forceit = eap->forceit;

	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;
	}
    }
}

/*
 * ":debuggreedy".
 */
    void
ex_debuggreedy(eap)
    exarg_T	*eap;
{
    if (eap->addr_count == 0 || eap->line2 != 0)
	debug_greedy = TRUE;
    else
	debug_greedy = FALSE;
}

/*
 * ":breakdel" and ":profdel".
 */
    void
ex_breakdel(eap)
    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;
#ifdef FEAT_PROFILE
    if (eap->cmdidx == CMD_profdel)
	gap = &prof_ga;
#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} [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)
	EMSG2(_("E161: Breakpoint not found: %s"), eap->arg);
    else
    {
	while (gap->ga_len > 0)
	    vim_free(DEBUGGY(gap, todel).dbg_name);
	    vim_free(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;
	}

	/* If all breakpoints were removed clear the array. */
	if (gap->ga_len == 0)
	    ga_clear(gap);
    }
}

/*
 * ":breaklist".
 */
    void
ex_breaklist(eap)
    exarg_T	*eap UNUSED;
{
    struct debuggy *bp;
    int		i;

    if (dbg_breakp.ga_len == 0)
	MSG(_("No breakpoints defined"));
    else
	for (i = 0; i < dbg_breakp.ga_len; ++i)
	{
	    bp = &BREAKP(i);
	    smsg((char_u *)_("%3d  %s %s  line %ld"),
		    bp->dbg_nr,
		    bp->dbg_type == DBG_FUNC ? "func" : "file",
		    bp->dbg_name,
		    (long)bp->dbg_lnum);
	}
}

/*
 * 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(file, fname, after)
    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)
/*
 * Return TRUE if profiling is on for a function or sourced file.
 */
    int
has_profiling(file, fname, fp)
    int		file;	    /* TRUE for a file, FALSE for a function */
    char_u	*fname;	    /* file or function name */
    int		*fp;	    /* return: forceit */
{
    return (debuggy_find(file, fname, (linenr_T)0, &prof_ga, fp)
							      != (linenr_T)0);
}
#endif

/*
 * Common code for dbg_find_breakpoint() and has_profiling().
 */
    static linenr_T
debuggy_find(file, fname, after, gap, fp)
    int		file;	    /* TRUE for a file, FALSE for a function */
    char_u	*fname;	    /* file or function name */
    linenr_T	after;	    /* after this line number */
    garray_T	*gap;	    /* either &dbg_breakp or &prof_ga */
    int		*fp;	    /* if not NULL: return forceit */
{
    struct debuggy *bp;
    int		i;
    linenr_T	lnum = 0;
    regmatch_T	regmatch;
    char_u	*name = fname;
    int		prev_got_int;

    /* Return quickly when there are no breakpoints. */
    if (gap->ga_len == 0)
	return (linenr_T)0;

    /* Replace K_SNR in function name with "<SNR>". */
    if (!file && fname[0] == K_SPECIAL)
    {
	name = alloc((unsigned)STRLEN(fname) + 3);
	if (name == NULL)
	    name = fname;
	else
	{
	    STRCPY(name, "<SNR>");
	    STRCPY(name + 5, fname + 3);
	}
    }

    for (i = 0; i < gap->ga_len; ++i)
	/* Skip entries that are not useful or are for a line that is beyond
	 * an already found breakpoint. */
	bp = &DEBUGGY(gap, i);
	if (((bp->dbg_type == DBG_FILE) == file && (
#ifdef FEAT_PROFILE
		gap == &prof_ga ||
#endif
		(bp->dbg_lnum > after && (lnum == 0 || bp->dbg_lnum < lnum)))))
	{
	    regmatch.regprog = bp->dbg_prog;
	    regmatch.rm_ic = FALSE;
	    /*
	     * Save the value of got_int and reset it.  We don't want a
	     * previous interruption cancel matching, only hitting CTRL-C
	     * while matching should abort it.
	     */
	    prev_got_int = got_int;
	    got_int = FALSE;
	    if (vim_regexec(&regmatch, name, (colnr_T)0))
		lnum = bp->dbg_lnum;
		if (fp != NULL)
		    *fp = bp->dbg_forceit;
	    }
	    got_int |= prev_got_int;
	}
    }
    if (name != fname)
	vim_free(name);

    return lnum;
}

/*
 * Called when a breakpoint was encountered.
 */
    void
dbg_breakpoint(name, lnum)
    char_u	*name;
    linenr_T	lnum;
{
    /* We need to check if this line is actually executed in do_one_cmd() */
    debug_breakpoint_name = name;
    debug_breakpoint_lnum = lnum;
}
# if defined(FEAT_PROFILE) || defined(FEAT_RELTIME) || defined(PROTO)
/*
 * Store the current time in "tm".
 */
    void
profile_start(tm)
    proftime_T *tm;
{
# ifdef WIN3264
    QueryPerformanceCounter(tm);
# else
    gettimeofday(tm, NULL);
# endif
}

/*
 * Compute the elapsed time from "tm" till now and store in "tm".
 */
    void
profile_end(tm)
    proftime_T *tm;
{
    proftime_T now;

# ifdef WIN3264
    QueryPerformanceCounter(&now);
    tm->QuadPart = now.QuadPart - tm->QuadPart;
# else
    gettimeofday(&now, NULL);
    tm->tv_usec = now.tv_usec - tm->tv_usec;
    tm->tv_sec = now.tv_sec - tm->tv_sec;
    if (tm->tv_usec < 0)
    {
	tm->tv_usec += 1000000;
	--tm->tv_sec;
    }
# endif
}

/*
 * Subtract the time "tm2" from "tm".
 */
    void
profile_sub(tm, tm2)
    proftime_T *tm, *tm2;
{
# ifdef WIN3264
    tm->QuadPart -= tm2->QuadPart;
# else
    tm->tv_usec -= tm2->tv_usec;
    tm->tv_sec -= tm2->tv_sec;
    if (tm->tv_usec < 0)
    {
	tm->tv_usec += 1000000;
	--tm->tv_sec;
    }
# endif
/*
 * Return a string that represents the time in "tm".
 * Uses a static buffer!
 */
    char *
profile_msg(tm)
    proftime_T *tm;
{
    static char buf[50];

# ifdef WIN3264
    LARGE_INTEGER   fr;

    QueryPerformanceFrequency(&fr);
    sprintf(buf, "%10.6lf", (double)tm->QuadPart / (double)fr.QuadPart);
# else
    sprintf(buf, "%3ld.%06ld", (long)tm->tv_sec, (long)tm->tv_usec);
# endif
    return buf;
}

/*
 * Put the time "msec" past now in "tm".
 */
    void
profile_setlimit(msec, tm)
    long	msec;
    proftime_T	*tm;
{
    if (msec <= 0)   /* no limit */
	profile_zero(tm);
    else
    {
# ifdef WIN3264
	LARGE_INTEGER   fr;

	QueryPerformanceCounter(tm);
	QueryPerformanceFrequency(&fr);
	tm->QuadPart += (LONGLONG)((double)msec / 1000.0 * (double)fr.QuadPart);
# else
	long	    usec;

	gettimeofday(tm, NULL);
	usec = (long)tm->tv_usec + (long)msec * 1000;
	tm->tv_usec = usec % 1000000L;
	tm->tv_sec += usec / 1000000L;
# endif
    }
}
 * Return TRUE if the current time is past "tm".
    int
profile_passed_limit(tm)
    proftime_T	*tm;
{
    proftime_T	now;

# ifdef WIN3264
    if (tm->QuadPart == 0)  /* timer was not set */
	return FALSE;
    QueryPerformanceCounter(&now);
    return (now.QuadPart > tm->QuadPart);
# else
    if (tm->tv_sec == 0)    /* timer was not set */
	return FALSE;
    gettimeofday(&now, NULL);
    return (now.tv_sec > tm->tv_sec
	    || (now.tv_sec == tm->tv_sec && now.tv_usec > tm->tv_usec));
# endif
}

/*
 * Set the time in "tm" to zero.
 */
    void
profile_zero(tm)
    proftime_T *tm;
{
# ifdef WIN3264
    tm->QuadPart = 0;
# else
    tm->tv_usec = 0;
    tm->tv_sec = 0;
# endif
}

# endif  /* FEAT_PROFILE || FEAT_RELTIME */

# if defined(FEAT_PROFILE) || defined(PROTO)
/*
 * Functions for profiling.
 */
static void script_do_profile __ARGS((scriptitem_T *si));
static void script_dump_profile __ARGS((FILE *fd));
static proftime_T prof_wait_time;

/*
 * Add the time "tm2" to "tm".
 */
    void
profile_add(tm, tm2)
    proftime_T *tm, *tm2;
{
# ifdef WIN3264
    tm->QuadPart += tm2->QuadPart;
# else
    tm->tv_usec += tm2->tv_usec;
    tm->tv_sec += tm2->tv_sec;
    if (tm->tv_usec >= 1000000)
    {
	tm->tv_usec -= 1000000;
	++tm->tv_sec;
    }
# endif
/*
 * Add the "self" time from the total time and the children's time.
 */
    void
profile_self(self, total, children)
    proftime_T *self, *total, *children;
{
    /* Check that the result won't be negative.  Can happen with recursive
     * calls. */
#ifdef WIN3264
    if (total->QuadPart <= children->QuadPart)
	return;
#else
    if (total->tv_sec < children->tv_sec
	    || (total->tv_sec == children->tv_sec
		&& total->tv_usec <= children->tv_usec))
	return;
#endif
    profile_add(self, total);