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interpret.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/time.h>
#include <time.h>
#include <sys/types.h> /* sys/types.h and netinet/in.h are here to enable include of comm.h below */
#include <sys/stat.h>
/* #include <netinet/in.h> Included in comm.h below */
#include <memory.h>
#include <limits.h>
#include <math.h>
#include <float.h>
#include <errno.h>
#include <unistd.h>
#include "config.h"
#include "lint.h"
#include "mstring.h"
#include "lang.h"
#include "exec.h"
#include "interpret.h"
#include "object.h"
#include "instrs.h"
#include "comm.h"
#include "mapping.h"
#include "mudstat.h"
#include "lex.h"
#include "comm1.h"
#include "simulate.h"
#include "main.h"
#include "sent.h"
#include "inline_eqs.h"
#include "inline_svalue.h"
#include "efun_table.h"
#define FLOATASGOP(lhs, op, rhs) { lhs op (double)rhs; }
struct fkntab
{
char *name;
unsigned short inherit_index;
unsigned short function_index;
};
extern char *crypt(const char *key, const char *salt);
extern struct object *master_ob;
extern struct vector *inherit_list (struct object *);
struct svalue *sapply (char *, struct object *, int, int);
#ifdef TRACE_CODE
static void do_trace (char *, char *, char *);
static int strpref (char *, char *);
#endif
static int apply_low (char *, struct object *, int, int);
extern int do_rename (char *, char *);
static int inter_sscanf (int);
extern int wildmat(char *, char *);
static struct closure *alloc_objclosure(int ftype, int funinh, int funno, struct object *ob, char *refstr, int usecache);
static struct closure *alloc_objclosurestr(int ftype, char *funstr, struct object *ob, char *refstr, int usecache);
INLINE int search_for_function(char *name, struct program *prog);
int s_f_f(char *name, struct program *prog);
extern struct object *previous_ob;
extern char *last_verb, *trig_verb;
struct program *current_prog;
extern int s_flag, unlimited;
extern struct object *current_interactive;
int variable_index_found;
int variable_inherit_found;
int variable_type_mod_found;
unsigned long long cache_tries = 0, cache_hits = 0;
int num_closures, total_closure_size;
#ifdef CACHE_STATS
long long call_cache_saves = 0;
long long global_cache_saves = 0;
long long searches_needed = 0;
long long searches_done = 0;
long long global_first_saves = 0;
long long call_first_saves = 0;
#endif
#ifdef PROFILE_LPC
int trace_calls;
FILE *trace_calls_file;
double last_execution;
#endif
static int tracedepth;
#define TRACE_CALL 1
#define TRACE_CALL_OTHER 2
#define TRACE_RETURN 4
#define TRACE_ARGS 8
#define TRACE_EXEC 16
#define TRACE_TOS 32
#define TRACE_APPLY 64
#define TRACE_OBJNAME 128
#define TRACE_HEART_BEAT 512
#define TRACETST(b) (current_interactive->interactive->trace_level & (b))
#define TRACEP(b) \
(current_interactive && current_interactive->interactive && TRACETST(b) && \
(current_interactive->interactive->trace_prefix == 0 || \
(current_object && strpref(current_interactive->interactive->trace_prefix, \
current_object->name))) )
/*
* Inheritance:
* An object X can inherit from another object Y. This is done with
* the statement inherit "file";
* The inherit statement will clone a copy of that file, call reset
* in it, and set a pointer to Y from X.
* Y has to be removed from the linked list of all objects.
* All variables declared by Y will be copied to X, so that X has access
* to them.
*
* If Y isnt loaded when it is needed, X will be discarded, and Y will be
* loaded separetly. X will then be reloaded again.
*/
extern int d_flag;
extern int current_line, eval_cost;
/*
* These are the registers used at runtime.
* The control stack saves registers to be restored when a function
* will return. That means that control_stack[0] will have almost no
* interesting values, as it will terminate execution.
*/
char *pc; /* Program pointer. */
static struct svalue *fp; /* Pointer to first argument. */
struct svalue *sp; /* Points to value of last push. */
int inh_offset; /* Needed for inheritance */
struct svalue start_of_stack[EVALUATOR_STACK_SIZE];
struct svalue catch_value; /* Used to throw an error to a catch */
static struct control_stack control_stack[MAX_TRACE];
struct control_stack *csp; /* Points to last element pushed */
#ifdef COUNT_CALLS /* Temporary */
static int num_call_self, num_call_down, num_call_other;
#endif
/* These are set by search_for_function if it is successful
* function_inherit_found == num_inherit if in top program
* function_prog_found == Implied by inherit_found
*/
int function_inherit_found = -1;
struct program *function_prog_found = 0;
int function_index_found = -1;
unsigned short function_type_mod_found = 0;
/*
* Information about assignments of values:
*
* There are three types of l-values: Local variables, global variables
* and vector elements.
*
* The local variables are allocated on the stack together with the arguments.
* the register 'frame_pointer' points to the first argument.
*
* The global variables must keep their values between executions, and
* have space allocated at the creation of the object.
*
* Elements in vectors are similar to global variables. There is a reference
* count to the whole vector, that states when to deallocate the vector.
* The elements consists of 'struct svalue's, and will thus have to be freed
* immediately when over written.
*/
/*
* Probe to see if the stack can be safely extended.
*/
static INLINE void
probe_stack(int n)
{
if (sp + n >= &start_of_stack[EVALUATOR_STACK_SIZE])
error("stack overflow\n");
}
/*
* Extend the stack and check for overflow.
*/
static INLINE void
extend_stack(void)
{
probe_stack(1);
++sp;
}
/*
* Push an object pointer on the stack. Note that the reference count is
* incremented.
* A destructed object must never be pushed onto the stack.
*/
INLINE void
push_object(struct object *ob)
{
extend_stack();
if (ob != NULL && !(ob->flags & O_DESTRUCTED))
{
sp->type = T_OBJECT;
sp->u.ob = ob;
add_ref(ob, "push_object");
}
else
{
*sp = const0;
}
}
/*
* Push a number on the value stack.
*/
INLINE void
push_number(long long n)
{
extend_stack();
sp->type = T_NUMBER;
sp->u.number = n;
}
INLINE void
push_float(double f)
{
extend_stack();
sp->type = T_FLOAT;
sp->u.real = f;
}
INLINE void
push_function(struct closure *func, bool_t reference)
{
extend_stack();
sp->type = T_FUNCTION;
sp->u.func = func;
if (reference)
INCREF(func->ref);
}
/*
* Push a string on the value stack.
*/
INLINE void
push_string(char *p, int type)
{
extend_stack();
sp->type = T_STRING;
sp->string_type = type;
switch(type) {
case STRING_MSTRING:
sp->u.string = make_mstring(p);
break;
case STRING_SSTRING:
sp->u.string = make_sstring(p);
break;
case STRING_CSTRING:
sp->u.string = p;
break;
}
}
/*
* Get address to a valid global variable.
*/
static INLINE struct svalue *
find_value(int inh, int rnum)
{
int num;
if ((inh == 255 && rnum == 255))
{
error("Referencing undefined variable (inh == %d, var_num == %d, variables are %s).\n",
inh, rnum, current_object->variables?"defined":"undefined");
}
if (inh == 255)
inh = 0;
else
inh -= current_prog->num_inherited - 1;
#ifdef DEBUG
if (inh > 0)
fatal("Illegal variable access, %d(off %d). See trace above.\n",
inh, current_prog->num_inherited);
if (rnum > current_object->prog->inherit[inh_offset + inh].prog->num_variables - 1)
fatal("Illegal variable access, variable %d(off %d, in %d). See trace above.\n",
rnum, current_object->prog->inherit[inh_offset + inh].prog->num_variables,
inh_offset + inh);
#endif
num = current_object->prog->
inherit[inh_offset + inh].variable_index_offset + rnum;
return ¤t_object->variables[num];
}
/*
* Free the data that an svalue is pointing to. Not the svalue
* itself.
*/
#if defined(PROFILE)
void
free_svalue(struct svalue *v)
{
if (v->type & T_LVALUE)
return;
switch (v->type) {
case T_NUMBER:
case T_FLOAT:
break;
case T_STRING:
switch (v->string_type) {
case STRING_MSTRING:
free_mstring(v->u.string);
break;
case STRING_SSTRING:
free_sstring(v->u.string);
break;
case STRING_CSTRING:
break;
}
break;
case T_OBJECT:
free_object(v->u.ob, "free_svalue");
break;
case T_POINTER:
free_vector(v->u.vec);
break;
case T_MAPPING:
free_mapping(v->u.map);
break;
case T_FUNCTION:
free_closure(v->u.func);
break;
default:
fatal("Invalid value of variable!\n");
break;
}
*v = const0; /* marion - clear this value all away */
}
int
equal_svalue(const struct svalue *sval1, const struct svalue *sval2)
{
if (sval1->type == T_NUMBER && sval1->u.number == 0 &&
sval2->type == T_OBJECT && sval2->u.ob->flags & O_DESTRUCTED)
return 1;
else if (sval2->type == T_NUMBER && sval2->u.number == 0 &&
sval1->type == T_OBJECT && sval1->u.ob->flags & O_DESTRUCTED)
return 1;
else if (sval2->type == T_NUMBER && sval2->u.number == 0 &&
sval1->type == T_FUNCTION && !legal_closure(sval1->u.func))
return 1;
else if (sval2->type == T_NUMBER && sval2->u.number == 0 &&
sval1->type == T_FUNCTION && !legal_closure(sval1->u.func))
return 1;
else if (sval1->type != sval2->type)
return 0;
else switch (sval1->type) {
case T_NUMBER:
return sval1->u.number == sval2->u.number;
case T_POINTER:
return sval1->u.vec == sval2->u.vec;
case T_MAPPING:
return sval1->u.map == sval2->u.map;
case T_STRING:
return sval1->u.string == sval2->u.string ||
strcmp(sval1->u.string, sval2->u.string) == 0;
case T_OBJECT:
return ((sval1->u.ob->flags & O_DESTRUCTED) && (sval2->u.ob->flags & O_DESTRUCTED)) ||
sval1->u.ob == sval2->u.ob;
case T_FLOAT:
return sval1->u.real == sval2->u.real;
case T_FUNCTION:
return sval1->u.func == sval2->u.func;
}
return 0;
}
#endif /* !PROFILE */
/*
* Prepend a slash in front of a string.
*/
char *
add_slash(char *cp)
{
size_t len;
char *xp;
len = strlen(cp) + 1;
xp = allocate_mstring(len);
xp[0] = '/';
(void)memcpy(&xp[1], cp, len);
return xp;
}
/*
* Assign to a svalue.
* This is done either when element in vector, or when to an identifier
* (as all identifiers are kept in a vector pointed to by the object).
*/
INLINE void
assign_svalue_no_free(struct svalue *to, struct svalue *from)
{
if (to == from)
return;
#ifdef DEBUG
if (from == 0)
fatal("Null pointer to assign_svalue().\n");
#endif
*to = *from;
switch(from->type) {
case T_STRING:
switch(from->string_type) {
case STRING_MSTRING:
(void)reference_mstring(from->u.string);
break;
case STRING_SSTRING:
(void)reference_sstring(from->u.string);
break;
case STRING_CSTRING:
break;
default:
fatal("Bad string type %d\n", from->string_type);
}
break;
case T_OBJECT:
add_ref(to->u.ob, "ass to var");
break;
case T_POINTER:
INCREF(to->u.vec->ref);
break;
case T_MAPPING:
INCREF(to->u.map->ref);
break;
case T_FUNCTION:
INCREF(to->u.func->ref);
break;
}
}
INLINE void
assign_svalue(struct svalue *dest, struct svalue *v)
{
if (dest == v)
return;
/* First deallocate the previous value. */
free_svalue(dest);
assign_svalue_no_free(dest, v);
}
#if 0
/* This function has been replaced with a macro to save speed. Macro is defined
* in interpret.h
*/
void
push_svalue(struct svalue *v)
{
extend_stack();
assign_svalue_no_free(sp, v);
}
#endif
/*
* Pop the top-most value of the stack.
* Don't do this if it is a value that will be used afterwards, as the
* data may be sent to free(), and destroyed.
*/
INLINE
void pop_stack()
{
#ifdef DEBUG
if (sp < start_of_stack)
fatal("Stack underflow.\n");
#endif
free_svalue(sp--);
}
/*
* Compute the address of an array element.
*/
INLINE static void
push_indexed_lvalue(int needlval)
{
struct svalue *i, *vec, *item;
long long ind = 0; /* = 0 to make Wall quiet */
long long org_ind = 0;
i = sp;
vec = sp - 1;
if (vec->type != T_MAPPING)
{
if (i->type != T_NUMBER)
error("Illegal index.\n");
org_ind = ind = i->u.number;
}
switch(vec->type) {
case T_STRING: {
static struct svalue one_character;
/* marion says: this is a crude part of code */
pop_stack();
one_character.type = T_NUMBER;
if (ind < 0)
ind = strlen(vec->u.string) + ind;
if (ind > strlen(vec->u.string) || ind < 0)
one_character.u.number = 0;
else
one_character.u.number = vec->u.string[ind];
free_svalue(sp);
sp->type = T_LVALUE;
sp->u.lvalue = &one_character;
break;}
case T_POINTER:
pop_stack();
if (ind < 0)
ind = vec->u.vec->size + ind;
if (ind >= vec->u.vec->size || ind < 0)
error("Index out of bounds. Vector size: %d, index: %lld\n",
vec->u.vec->size, org_ind);
item = &vec->u.vec->item[ind];
if (vec->u.vec->ref == 1) {
static struct svalue quickfix = { T_NUMBER };
/* marion says: but this is crude too */
/* marion blushes. */
assign_svalue (&quickfix, item);
item = &quickfix;
}
free_svalue(sp); /* This will make 'vec' invalid to use */
sp->type = T_LVALUE;
sp->u.lvalue = item;
break;
case T_MAPPING:
item = get_map_lvalue(vec->u.map, i, needlval);
pop_stack();
if (vec->u.map->ref == 1) {
static struct svalue quickfix = { T_NUMBER };
assign_svalue (&quickfix, item);
item = &quickfix;
}
free_svalue(sp); /* This will make 'vec' invalid to use */
sp->type = T_LVALUE;
sp->u.lvalue = item;
break;
default:
error("Indexing on illegal type.\n");
break;
}
}
#ifdef OPCPROF
#define MAXOPC 512
static int opcount[MAXOPC];
#endif
/*
* Deallocate 'n' values from the stack.
*/
INLINE
void pop_n_elems(int n)
{
#ifdef DEBUG
if (n < 0)
fatal("pop_n_elems: %d elements.\n", n);
#endif
for (; n > 0; n--)
pop_stack();
}
char *
get_typename(int type)
{
switch(type)
{
case T_NUMBER:
return "Integer";
case T_STRING:
return "String";
case T_POINTER:
return "Array";
case T_OBJECT:
return "Object";
case T_MAPPING:
return "Mapping";
case T_FLOAT:
return "Float";
case T_FUNCTION:
return "Function";
}
return "Unknown";
}
void
bad_arg(int arg, int instr, struct svalue *sv)
{
error("Bad argument %d to %s(), received type was %s \n", arg, get_f_name(instr), get_typename(sv->type));
}
void
bad_arg_op(int instr, struct svalue *arg1, struct svalue *arg2)
{
error("Bad arguments to %s(), received types were %s and %s\n",
get_f_name(instr), get_typename(arg1->type), get_typename(arg2->type));
}
#if defined(PROFILE_LPC)
/* profile_exp_mtimebase should equal (1.0 - exp(-1.0/profile_timebase)) */
static long double profile_timebase = 60.0l, profile_exp_mtimebase = 0x8.766dfa92ba7052ep-9l;
long double
get_profile_timebase() {
return profile_timebase;
}
void
set_profile_timebase(long double timebase) {
if (timebase > 0.0) {
profile_timebase = timebase;
profile_exp_mtimebase = -expm1l(-1.0l / timebase);
}
}
#define _UPDATE_AV_C(delta_time) (expl(-(delta_time) / (profile_timebase)))
#define _UPDATE_AV(avg, C, amt) \
((avg) = (avg) * (C) + \
(amt) * (profile_exp_mtimebase))
#define UPDATE_AV(avg, delta_time, amt) (_UPDATE_AV((avg), _UPDATE_AV_C((delta_time)), (amt)))
double
current_cpu(void)
{
struct timeval tv;
gettimeofday(&tv, 0);
return tv.tv_sec + tv.tv_usec * 1e-6;
}
void
update_prog_profile(struct program *prog, double now, double delta, double tot_delta)
{
UPDATE_AV(prog->cpu_avg, (now - prog->last_avg_update), delta);
prog->last_avg_update = now;
prog->cpu += delta;
}
void
update_func_profile(struct function *funp, double now, double delta, double tot_delta, int calls)
{
long double C = _UPDATE_AV_C((now - funp->last_call_update));
funp->last_call_update = now;
_UPDATE_AV(funp->avg_time, C, delta);
funp->time_spent += delta;
_UPDATE_AV(funp->avg_tot_time, C, tot_delta);
funp->tot_time_spent += tot_delta;
_UPDATE_AV(funp->avg_calls, C, calls);
funp->num_calls += calls;
}
#endif
void
save_control_context(struct control_stack *csp1)
{
#ifdef DEBUG
if (current_prog && pc - current_prog->program >= current_prog->program_size)
fatal("Invalid offset during context save\n");
#endif
csp1->ob = current_object;
csp1->prev_ob = previous_ob;
csp1->fp = fp;
csp1->funp = 0;
csp1->prog = current_prog;
csp1->extern_call = 0;
if (current_prog)
csp1->pc = pc - current_prog->program;
#ifdef DEBUG
else
csp1->pc = 0xdeadbeef;
#endif
csp1->inh_offset = inh_offset;
}
void
push_control_stack(struct object *ob, struct program *prog, struct function *funp)
{
if (csp >= &control_stack[MAX_TRACE-1])
error("Too deep recursion.\n");
csp++;
save_control_context(csp);
csp->funp = funp; /* Only used for tracebacks */
#if defined(PROFILE_LPC)
{
double now = current_cpu();
if (trace_calls) {
if (csp == control_stack)
fprintf(trace_calls_file, "%.3f %.6f\n",
(now - last_execution) * 1000.0, now);
fprintf(trace_calls_file, "%*s%s %s %s()\n",
(csp - control_stack) * 4, "",
ob->name, prog->name, funp ? funp->name : "???");
}
if (csp != control_stack) {
csp[-1].frame_cpu += now - csp[-1].startcpu;
}
csp->frame_start = csp->startcpu = now;
csp->frame_cpu = 0.0;
}
#endif
}
/*
* Pop the control stack one element, and restore registers.
* extern_call must not be modified here, as it is used imediately after pop.
*/
void
restore_control_context(struct control_stack *csp1)
{
current_object = csp1->ob;
current_prog = csp1->prog;
if(current_prog)
{
pc = current_prog->program + csp1->pc;
}
previous_ob = csp1->prev_ob;
fp = csp1->fp;
inh_offset = csp1->inh_offset;
}
void
pop_control_stack()
{
#ifdef DEBUG
if (csp == control_stack - 1)
fatal("Popped out of the control stack\n");
#endif
#if defined(PROFILE_LPC)
{
double now = current_cpu();
double delta = csp->frame_cpu + (now - csp->startcpu);
double tot_delta = now - csp->frame_start;
if (current_prog)
update_prog_profile(current_prog, now, delta, tot_delta);
if (csp->funp)
update_func_profile(csp->funp, now, delta, tot_delta, 1);
if (csp != control_stack) {
csp[-1].startcpu = now;
} else
last_execution = now;
if (trace_calls) {
fprintf(trace_calls_file, "%*s--- %.3f / %.3f\n",
(csp - control_stack) * 4, "",
delta * 1000.0,
tot_delta * 1000.0);
if (csp == control_stack)
putc('\n', trace_calls_file);
}
}
#endif
restore_control_context(csp);
csp--;
}
/*
* Push a pointer to a vector on the stack. Note that the reference count
* is incremented. Newly created vectors normally have a reference count
* initialized to 1.
*/
INLINE void
push_vector(struct vector *v, bool_t reference)
{
extend_stack();
if (reference)
INCREF(v->ref);
sp->type = T_POINTER;
sp->u.vec = v;
}
INLINE void
push_mapping(struct mapping *v, bool_t reference)
{
extend_stack();
if (reference)
INCREF(v->ref);
sp->type = T_MAPPING;
sp->u.map = v;
}
/*
* Push a string on the stack that is already allocated.
*/
INLINE void
push_mstring(char *p)
{
extend_stack();
sp->type = T_STRING;
sp->string_type = STRING_MSTRING;
sp->u.string = p;
}
extern char *string_print_formatted (int , char *, int, struct svalue *);
#ifdef TRACE_CODE
static void
do_trace_call(struct function *funp)
{
do_trace("Call direct ", funp->name, " ");
if (TRACETST(TRACE_ARGS))
{
int i;
char buff[1024];
(void)sprintf(buff, " with %d arguments: ", funp->num_arg);
write_socket(buff, command_giver);
for(i = 0; i < funp->num_arg; i++)
write_socket(string_print_formatted(0, "%O ", 1, &fp[i]),
command_giver);
}
write_socket("\n", command_giver);
}
#endif
static unsigned int previous_ob_access_time;
/*
* Argument is the function to execute.
* The function is located in current_prog.
* There is a number of arguments on the stack. Normalize them and initialize
* local variables, so that the called function is pleased.
*/
char *
setup_new_frame(struct function *funp)
{
int called_args;
unsigned short int npc;
char *off;
/* Remove excessive arguments, or put them in argv if applicable */
previous_ob_access_time = current_object->time_of_ref;
if (funp->type_flags & TYPE_MOD_TRUE_VARARGS)
{
if (csp->num_local_variables >= funp->num_arg)
{
struct vector *v;
int i, narg;
v = allocate_array(narg = csp->num_local_variables -
(funp->num_arg - 1));
for (i = narg - 1; i >= 0; i--)
assign_svalue_no_free(&v->item[narg - 1 - i], &sp[-i]);
pop_n_elems(narg);
push_vector(v, FALSE);
csp->num_local_variables -= narg - 1;
}
}
else
while(csp->num_local_variables > funp->num_arg)
{
pop_stack();
csp->num_local_variables--;
}
/* Correct number of arguments and local variables */
called_args = csp->num_local_variables;
while(csp->num_local_variables < funp->num_arg + (int)funp->num_local)
{
push_number(0);
csp->num_local_variables++;
}
#ifdef DEBUG
if (called_args > funp->num_arg)
fatal("Error in seting up call frame!\n");
#endif
if (called_args == funp->num_arg)
npc = funp->offset + funp->num_arg * 2;
else
{
off = current_prog->program + funp->offset + called_args * 2;
((char *)&npc)[0] = off[0];
((char *)&npc)[1] = off[1];
}
tracedepth++;
fp = sp - csp->num_local_variables + 1;
#ifdef TRACE_CODE
if (TRACEP(TRACE_CALL)) {
do_trace_call(funp);
}
#endif
return current_prog->program + npc;
}
/* marion
* maintain a small and inefficient stack of error recovery context
* data structures.
* This routine is called in three different ways:
* push=-1 Pop the stack.
* push=1 push the stack.
* push=0 No error occured, so the pushed value does not have to be
* restored. The pushed value can simply be popped into the void.
*
* The stack is implemented as a linked list of stack-objects, allocated
* from the heap, and deallocated when popped.
*/
void
push_pop_error_context (int push)
{
static struct error_context_stack
{
struct gdexception *exception;
struct control_stack *save_csp;
struct object *save_command_giver;
struct svalue *save_sp;
struct error_context_stack *next;
struct control_stack cstack;
} *ecsp = 0, *p;
if (push == 1) {
/*
* Save some global variables that must be restored separately
* after a longjmp. The stack will have to be manually popped all
* the way.
*/
p = (struct error_context_stack *)xalloc (sizeof *p);
save_control_context(&(p->cstack));
p->save_sp = sp;
p->save_csp = csp;
p->save_command_giver = command_giver;
p->exception = exception;
p->next = ecsp;
ecsp = p;
} else {
p = ecsp;
if (p == 0)
fatal("Catch: error context stack underflow\n");
if (push == 0) {
#ifdef DEBUG
#if 0
if (csp != p->save_csp-1)
fatal("Catch: Lost track of csp\n");
#endif
#endif
;
} else {
/* push == -1 !
* They did a throw() or error. That means that the control
* stack must be restored manually here.
*/
#ifdef PROFILE_LPC
double now = current_cpu();
struct program *prog = current_prog;
csp->frame_cpu += (now - csp->startcpu);
for (;csp != p->save_csp; (prog = csp->prog), csp--) {
double frame_tot_cpu = now - csp->frame_start;
if (prog)
update_prog_profile(prog, now, csp->frame_cpu, frame_tot_cpu);
if (csp->funp)
update_func_profile(csp->funp, now, csp->frame_cpu, frame_tot_cpu, 1);
if (trace_calls) {
fprintf(trace_calls_file, "%*s--- %.3f / %.3f\n",
(csp - control_stack) * 4, "",
csp->frame_cpu * 1000.0,
frame_tot_cpu * 1000.0);
}
}
csp->startcpu = now;
#else
csp = p->save_csp;
#endif
pop_n_elems (sp - p->save_sp);
command_giver = p->save_command_giver;
}
exception = p->exception;
ecsp = p->next;
restore_control_context(&(p->cstack));
free ((char *)p);
}
}
/*
* May current_object shadow object ob ? We rely heavily on the fact that
* function names are pointers to shared strings, which means that equality
* can be tested simply through pointer comparison.
*/
int
validate_shadowing(struct object *ob)