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/*
* Copyright 2001-2012, Paul Johnson (paul@pjcj.net)
*
* This software is free. It is licensed under the same terms as Perl itself.
*
* The latest version of this software should be available from my homepage:
* http://www.pjcj.net
*
*/
#ifdef __cplusplus
extern "C" {
#endif
#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifdef __cplusplus
}
#endif
#ifdef PERL_OBJECT
#define CALLOP this->*PL_op
#else
#define CALLOP *PL_op
#endif
#ifndef START_MY_CXT
/* No threads in 5.6 */
#define START_MY_CXT static my_cxt_t my_cxt;
#define dMY_CXT_SV dNOOP
#define dMY_CXT dNOOP
#define MY_CXT_INIT NOOP
#define MY_CXT my_cxt
#define pMY_CXT void
#define pMY_CXT_
#define _pMY_CXT
#define aMY_CXT
#define aMY_CXT_
#define _aMY_CXT
#endif
#define MY_CXT_KEY "Devel::Cover::_guts" XS_VERSION
#define PDEB(a) a
#define NDEB(a) ;
#define D PerlIO_printf
#define L Perl_debug_log
#define svdump(sv) do_sv_dump(0, L, (SV *)sv, 0, 10, 1, 0);
#define None 0x00000000
#define Statement 0x00000001
#define Branch 0x00000002
#define Condition 0x00000004
#define Subroutine 0x00000008
#define Path 0x00000010
#define Pod 0x00000020
#define Time 0x00000040
#define All 0xffffffff
#define CAN_PROFILE defined HAS_GETTIMEOFDAY || defined HAS_TIMES
struct unique /* Well, we'll be fairly unlucky if it's not */
{
OP *addr,
op;
};
#define KEY_SZ sizeof(struct unique)
typedef struct
{
unsigned covering;
int collecting_here;
HV *cover,
*statements,
*branches,
*conditions,
#if CAN_PROFILE
*times,
#endif
*modules,
*files;
AV *ends;
char profiling_key[KEY_SZ];
bool profiling_key_valid;
SV *module,
*lastfile;
int tid;
int replace_ops;
/* - fix up whatever is broken with module_relative on Windows here */
#if PERL_VERSION > 8
Perl_ppaddr_t ppaddr[MAXO];
#else
OP *(*ppaddr[MAXO])(pTHX);
#endif
} my_cxt_t;
#ifdef USE_ITHREADS
static perl_mutex DC_mutex;
#endif
static HV *Pending_conditionals,
*Return_ops;
static int tid;
START_MY_CXT
#define collecting(criterion) (MY_CXT.covering & (criterion))
#ifdef HAS_GETTIMEOFDAY
#ifdef __cplusplus
extern "C" {
#endif
#ifdef WIN32
#include <time.h>
#else
#include <sys/time.h>
#endif
#ifdef __cplusplus
}
#endif
static double get_elapsed()
{
#ifdef WIN32
dTHX;
#endif
struct timeval time;
double e;
gettimeofday(&time, NULL);
e = time.tv_sec * 1e6 + time.tv_usec;
return e;
}
static double elapsed()
{
static double p;
double e, t;
t = get_elapsed();
e = t - p;
p = t;
return e;
}
#elif defined HAS_TIMES
#ifndef HZ
# ifdef CLK_TCK
# define HZ CLK_TCK
# else
# define HZ 60
# endif
#endif
static int cpu()
{
#ifdef WIN32
dTHX;
#endif
static struct tms time;
static int utime = 0,
stime = 0;
int e;
#ifndef VMS
(void)PerlProc_times(&time);
#else
(void)PerlProc_times((tbuffer_t *)&time);
#endif
e = time.tms_utime - utime + time.tms_stime - stime;
utime = time.tms_utime;
stime = time.tms_stime;
return e / HZ;
}
#endif /* HAS_GETTIMEOFDAY */
static char *get_key(OP *o)
{
static struct unique uniq;
uniq.addr = o;
uniq.op = *o;
uniq.op.op_ppaddr = 0; /* we mess with this field */
uniq.op.op_targ = 0; /* might change */
return (char *)&uniq;
}
static char *hex_key(char *key)
{
static char hk[KEY_SZ * 2 + 1];
unsigned int c;
for (c = 0; c < KEY_SZ; c++)
{
NDEB(D(L, "%d of %d, <%02X> at %p\n",
c, KEY_SZ, (unsigned char)key[c], hk + c * 2));
sprintf(hk + c * 2, "%02X", (unsigned char)key[c]);
}
hk[c * 2] = 0;
return hk;
}
static void set_firsts_if_needed(pTHX)
{
SV *init = (SV *)get_cv("Devel::Cover::first_init", 0);
SV *end = (SV *)get_cv("Devel::Cover::first_end", 0);
NDEB(svdump(end));
if (PL_initav && av_len(PL_initav) >= 0)
{
SV **cv = av_fetch(PL_initav, 0, 0);
if (*cv != init)
{
av_unshift(PL_initav, 1);
av_store(PL_initav, 0, init);
}
}
if (PL_endav && av_len(PL_endav) >= 0)
{
SV **cv = av_fetch(PL_endav, 0, 0);
if (*cv != end)
{
av_unshift(PL_endav, 1);
av_store(PL_endav, 0, end);
}
}
}
static int check_if_collecting(pTHX)
{
dMY_CXT;
char *file = CopFILE(cCOP);
int in_re_eval = strnEQ(file, "(reeval ", 8);
NDEB(D(L, "check_if_collecting at: %s:%ld\n", file, CopLINE(cCOP)));
if (file && strNE(SvPV_nolen(MY_CXT.lastfile), file))
{
if (MY_CXT.replace_ops && !in_re_eval)
{
dSP;
int count;
SV *rv;
ENTER;
SAVETMPS;
PUSHMARK(SP);
XPUSHs(sv_2mortal(newSVpv(file, 0)));
PUTBACK;
count = call_pv("Devel::Cover::use_file", G_SCALAR);
SPAGAIN;
if (count != 1)
croak("use_file returned %d values\n", count);
rv = POPs;
MY_CXT.collecting_here = SvTRUE(rv) ? 1 : 0;
NDEB(D(L, "-- %s - %d\n", file, MY_CXT.collecting_here));
PUTBACK;
FREETMPS;
LEAVE;
}
else if (MY_CXT.files)
{
SV **f = hv_fetch(MY_CXT.files, file, strlen(file), 0);
MY_CXT.collecting_here = f ? SvIV(*f) : 1;
NDEB(D(L, "File: %s:%ld [%d]\n",
file, CopLINE(cCOP), MY_CXT.collecting_here));
}
sv_setpv(MY_CXT.lastfile, file);
}
NDEB(D(L, "%s - %d\n",
SvPV_nolen(MY_CXT.lastfile), MY_CXT.collecting_here));
#if PERL_VERSION > 6
if (SvTRUE(MY_CXT.module))
{
STRLEN mlen,
flen = strlen(file);
char *m = SvPV(MY_CXT.module, mlen);
if (flen >= mlen && strnEQ(m, file + flen - mlen, mlen))
{
SV **dir = hv_fetch(MY_CXT.modules, file, strlen(file), 1);
if (!SvROK(*dir))
{
SV *cwd = newSV(0);
AV *d = newAV();
*dir = newRV_inc((SV*) d);
av_push(d, newSVsv(MY_CXT.module));
if (getcwd_sv(cwd))
{
av_push(d, newSVsv(cwd));
NDEB(D(L, "require %s as %s from %s\n",
m, file, SvPV_nolen(cwd)));
}
}
}
sv_setpv(MY_CXT.module, "");
set_firsts_if_needed(aTHX);
}
#endif
return MY_CXT.collecting_here;
}
#if CAN_PROFILE
static void cover_time(pTHX)
{
dMY_CXT;
SV **count;
NV c;
if (collecting(Time))
{
/*
* Profiling information is stored against MY_CXT.profiling_key,
* the key for the op we have just run.
*/
NDEB(D(L, "Cop at %p, op at %p\n", PL_curcop, PL_op));
if (MY_CXT.profiling_key_valid)
{
count = hv_fetch(MY_CXT.times, MY_CXT.profiling_key, KEY_SZ, 1);
c = (SvTRUE(*count) ? SvNV(*count) : 0) +
#if defined HAS_GETTIMEOFDAY
elapsed();
#else
cpu();
#endif
sv_setnv(*count, c);
}
if (PL_op)
{
memcpy(MY_CXT.profiling_key, get_key(PL_op), KEY_SZ);
MY_CXT.profiling_key_valid = 1;
}
else
MY_CXT.profiling_key_valid = 0;
}
}
#endif
static int collecting_here(pTHX)
{
dMY_CXT;
if (MY_CXT.collecting_here) return 1;
#if CAN_PROFILE
cover_time(aTHX);
MY_CXT.profiling_key_valid = 0;
#endif
NDEB(D(L, "op %p is %s\n", PL_op, OP_NAME(PL_op)));
if (hv_exists(Return_ops, get_key(PL_op), KEY_SZ))
return MY_CXT.collecting_here = 1;
else
return 0;
}
static void store_return(pTHX)
{
dMY_CXT;
/*
* If we are jumping somewhere we might not be collecting
* coverage there, so store where we will be coming back to
* so we can turn on coverage straight away. We need to
* store more than one return op because a non collecting
* sub may call back to a collecting sub.
*/
if (MY_CXT.collecting_here && PL_op->op_next)
{
(void)hv_fetch(Return_ops, get_key(PL_op->op_next), KEY_SZ, 1);
NDEB(D(L, "adding return op %p\n", PL_op->op_next));
}
}
static void store_module(pTHX)
{
dMY_CXT;
dSP;
SvSetSV_nosteal(MY_CXT.module, TOPs);
NDEB(D(L, "require %s\n", SvPV_nolen(MY_CXT.module)));
}
static void call_report(pTHX)
{
dSP;
PUSHMARK(SP);
call_pv("Devel::Cover::report", G_VOID|G_DISCARD|G_EVAL);
SPAGAIN;
}
static void cover_statement(pTHX_ OP *op)
{
dMY_CXT;
char *ch;
SV **count;
IV c;
if (!collecting(Statement)) return;
ch = get_key(op);
count = hv_fetch(MY_CXT.statements, ch, KEY_SZ, 1);
c = SvTRUE(*count) ? SvIV(*count) + 1 : 1;
NDEB(D(L, "Statement: %s:%ld\n", CopFILE(cCOPx(op)), CopLINE(cCOPx(op))));
sv_setiv(*count, c);
NDEB(op_dump(op));
}
static void cover_current_statement(pTHX)
{
#if CAN_PROFILE
cover_time(aTHX);
#endif
cover_statement(aTHX_ PL_op);
}
static void add_branch(pTHX_ OP *op, int br)
{
dMY_CXT;
AV *branches;
SV **count;
int c;
SV **tmp = hv_fetch(MY_CXT.branches, get_key(op), KEY_SZ, 1);
if (SvROK(*tmp))
branches = (AV *) SvRV(*tmp);
else
{
*tmp = newRV_inc((SV*) (branches = newAV()));
av_unshift(branches, 2);
}
count = av_fetch(branches, br, 1);
c = SvTRUE(*count) ? SvIV(*count) + 1 : 1;
sv_setiv(*count, c);
NDEB(D(L, "Adding branch making %d at %p\n", c, op));
}
static AV *get_conditional_array(pTHX_ OP *op)
{
dMY_CXT;
AV *conds;
SV **cref = hv_fetch(MY_CXT.conditions, get_key(op), KEY_SZ, 1);
if (SvROK(*cref))
conds = (AV *) SvRV(*cref);
else
*cref = newRV_inc((SV*) (conds = newAV()));
return conds;
}
static void set_conditional(pTHX_ OP *op, int cond, int value)
{
/*
* The conditional array comprises six elements:
*
* 0 - 1 iff we are in an xor and the first operand was true
* 1 - not short circuited - second operand is false
* 2 - not short circuited - second operand is true
* 3 - short circuited, or for xor second operand is false
* 4 - for xor second operand is true
* 5 - 1 iff we are in void context
*/
SV **count = av_fetch(get_conditional_array(aTHX_ op), cond, 1);
sv_setiv(*count, value);
NDEB(D(L, "Setting %d conditional to %d at %p\n", cond, value, op));
}
static void add_conditional(pTHX_ OP *op, int cond)
{
SV **count = av_fetch(get_conditional_array(aTHX_ op), cond, 1);
int c = SvTRUE(*count) ? SvIV(*count) + 1 : 1;
sv_setiv(*count, c);
NDEB(D(L, "Adding %d conditional making %d at %p\n", cond, c, op));
}
#ifdef USE_ITHREADS
static AV *get_conds(pTHX_ AV *conds)
{
dMY_CXT;
AV *thrconds;
HV *threads;
SV *tid,
**cref;
char *t;
if (av_exists(conds, 2))
{
SV **cref = av_fetch(conds, 2, 0);
threads = (HV *) *cref;
}
else
{
threads = newHV();
HvSHAREKEYS_off(threads);
av_store(conds, 2, (SV *)threads);
}
tid = newSViv(MY_CXT.tid);
t = SvPV_nolen(tid);
cref = hv_fetch(threads, t, strlen(t), 1);
if (SvROK(*cref))
thrconds = (AV *)SvRV(*cref);
else
*cref = newRV_inc((SV*) (thrconds = newAV()));
return thrconds;
}
#endif
static void add_condition(pTHX_ SV *cond_ref, int value)
{
int final = !value;
AV *conds = (AV *) SvRV(cond_ref);
OP *next = INT2PTR(OP *, SvIV(*av_fetch(conds, 0, 0)));
OP *(*addr)(pTHX) = INT2PTR(OP *(*)(pTHX), SvIV(*av_fetch(conds, 1, 0)));
I32 i;
if (!final && next != PL_op)
croak("next (%p) does not match PL_op (%p)", next, PL_op);
#ifdef USE_ITHREADS
i = 0;
conds = get_conds(aTHX_ conds);
#else
i = 2;
#endif
NDEB(D(L, "Looking through %d conditionals at %p\n",
av_len(conds) - 1, PL_op));
for (; i <= av_len(conds); i++)
{
OP *op = INT2PTR(OP *, SvIV(*av_fetch(conds, i, 0)));
SV **count = av_fetch(get_conditional_array(aTHX_ op), 0, 1);
int type = SvTRUE(*count) ? SvIV(*count) : 0;
sv_setiv(*count, 0);
/* Check if we have come from an xor with a true first op */
if (final) value = 1;
if (type == 1) value += 2;
NDEB(D(L, "Found %p: %d, %d\n", op, type, value));
add_conditional(aTHX_ op, value);
}
#ifdef USE_ITHREADS
i = -1;
#else
i = 1;
#endif
while (av_len(conds) > i) av_pop(conds);
NDEB(svdump(conds));
NDEB(D(L, "addr is %p, next is %p, PL_op is %p, length is %d final is %d\n",
addr, next, PL_op, av_len(conds), final));
if (!final) next->op_ppaddr = addr;
}
static void dump_conditions(pTHX)
{
HE *e;
MUTEX_LOCK(&DC_mutex);
hv_iterinit(Pending_conditionals);
PDEB(D(L, "Pending_conditionals:\n"));
while ((e = hv_iternext(Pending_conditionals)))
{
I32 len;
char *key = hv_iterkey(e, &len);
SV *cond_ref = hv_iterval(Pending_conditionals, e);
AV *conds = (AV *) SvRV(cond_ref);
OP *next = INT2PTR(OP *, SvIV(*av_fetch(conds, 0,0)));
OP *(*addr)(pTHX) = INT2PTR(OP *(*)(pTHX), SvIV(*av_fetch(conds, 1,0)));
I32 i;
#ifdef USE_ITHREADS
i = 0; /* TODO - this can't be right */
conds = get_conds(aTHX_ conds);
#else
i = 2;
#endif
PDEB(D(L, " %s: op %p, next %p (%d)\n",
hex_key(key), next, addr, av_len(conds) - 1));
for (; i <= av_len(conds); i++)
{
OP *op = INT2PTR(OP *, SvIV(*av_fetch(conds, i, 0)));
SV **count = av_fetch(get_conditional_array(aTHX_ op), 0, 1);
int type = SvTRUE(*count) ? SvIV(*count) : 0;
sv_setiv(*count, 0);
PDEB(D(L, " %2d: %p, %d\n", i - 2, op, type));
}
}
MUTEX_UNLOCK(&DC_mutex);
}
/* NOTE: caller must protect get_condition calls by locking DC_mutex */
static OP *get_condition(pTHX)
{
SV **pc = hv_fetch(Pending_conditionals, get_key(PL_op), KEY_SZ, 0);
if (pc && SvROK(*pc))
{
dSP;
NDEB(D(L, "get_condition from %p, %p: %p (%s)\n",
PL_op, (void *)PL_op->op_targ, pc, hex_key(get_key(PL_op))));
/* dump_conditions(aTHX); */
NDEB(svdump(Pending_conditionals));
add_condition(aTHX_ *pc, SvTRUE(TOPs) ? 2 : 1);
}
else
{
PDEB(D(L, "All is lost, I know not where to go from %p, %p: %p (%s)\n",
PL_op, (void *)PL_op->op_targ, pc, hex_key(get_key(PL_op))));
dump_conditions(aTHX);
NDEB(svdump(Pending_conditionals));
/* croak("urgh"); */
exit(1);
}
return PL_op;
}
static void finalise_conditions(pTHX)
{
/*
* Our algorithm for conditions relies on ending up at a particular
* op which we use to call get_condition(). It's possible that we
* never get to that op; for example we might return out of a sub.
* This causes us to lose coverage information.
*
* This function is called after the program has been run in order
* to collect that lost information.
*/
HE *e;
NDEB(D(L, "finalise_conditions\n"));
/* dump_conditions(aTHX); */
NDEB(svdump(Pending_conditionals));
MUTEX_LOCK(&DC_mutex);
hv_iterinit(Pending_conditionals);
while ((e = hv_iternext(Pending_conditionals)))
{
add_condition(aTHX_ hv_iterval(Pending_conditionals, e), 0);
}
MUTEX_UNLOCK(&DC_mutex);
}
static void cover_cond(pTHX)
{
dMY_CXT;
if (collecting(Branch))
{
dSP;
int val = SvTRUE(TOPs);
add_branch(aTHX_ PL_op, !val);
}
}
static void cover_logop(pTHX)
{
/*
* For OP_AND, if the first operand is false, we have short
* circuited the second, otherwise the value of the and op is the
* value of the second operand.
*
* For OP_OR, if the first operand is true, we have short circuited
* the second, otherwise the value of the and op is the value of the
* second operand.
*
* We check the value of the first operand by simply looking on the
* stack. To check the second operand it is necessary to note the
* location of the next op after this logop. When we get there, we
* look at the stack and store the coverage information indexed to
* this op.
*
* This scheme also works for OP_XOR with a small modification
* because it doesn't short circuit. See the comment below.
*
* To find out when we get to the next op we change the op_ppaddr to
* point to get_condition(), which will do the necessary work and
* then reset and run the original op_ppaddr. We also store
* information in the Pending_conditionals hash. This is keyed on
* the op and the value is an array, the first element of which is
* the op we are messing with, the second element of which is the
* op_ppaddr we overwrote, and the subsequent elements are the ops
* about which we are collecting the condition coverage information.
* Note that an op may be collecting condition coverage information
* about a number of conditions.
*/
dMY_CXT;
NDEB(D(L, "logop() at %p\n", PL_op));
NDEB(op_dump(PL_op));
if (!collecting(Condition))
return;
if (cLOGOP->op_first->op_type == OP_ITER)
{
/* loop - ignore it for now*/
}
else
{
dSP;
int left_val = SvTRUE(TOPs);
#if PERL_VERSION > 8
int left_val_def = SvOK(TOPs);
#endif
int void_context = GIMME_V == G_VOID;
NDEB(D(L, "left_val: %d, void_context: %d at %p\n",
left_val, void_context, PL_op));
NDEB(op_dump(PL_op));
set_conditional(aTHX_ PL_op, 5, void_context);
if ((PL_op->op_type == OP_AND && left_val) ||
(PL_op->op_type == OP_ANDASSIGN && left_val) ||
(PL_op->op_type == OP_OR && !left_val) ||
(PL_op->op_type == OP_ORASSIGN && !left_val) ||
#if PERL_VERSION > 8
(PL_op->op_type == OP_DOR && !left_val_def) ||
(PL_op->op_type == OP_DORASSIGN && !left_val_def) ||
#endif
(PL_op->op_type == OP_XOR))
{
/* no short circuit */
OP *right = cLOGOP->op_first->op_sibling;
NDEB(op_dump(right));
if (void_context ||
right->op_type == OP_NEXT ||
right->op_type == OP_LAST ||
right->op_type == OP_REDO ||
right->op_type == OP_GOTO ||
right->op_type == OP_RETURN ||
right->op_type == OP_DIE)
{
/*
* If we are in void context, or the right side of the op is a
* branch, we don't care what its value is - it won't be
* returning one. We're just glad to be here, so we chalk up
* success.
*/
add_conditional(aTHX_ PL_op, 2);
}
else
{
char *ch;
AV *conds;
SV **cref,
*cond;
OP *next;
if (PL_op->op_type == OP_XOR && left_val)
{
/*
* This is an xor. It does not short circuit. We
* have just executed the first op. When we get to
* next we will have already done the xor, so we can
* work out what the value of the second op was.
*
* We set a flag in the first element of the array
* to say that we had a true value from the first
* op.
*/
set_conditional(aTHX_ PL_op, 0, 1);
}
#if PERL_VERSION > 14
next = (PL_op->op_type == OP_XOR)
? PL_op->op_next
: right->op_next;
#else
next = PL_op->op_next;
#endif
NDEB(op_dump(PL_op));
NDEB(op_dump(next));
ch = get_key(next);
MUTEX_LOCK(&DC_mutex);
cref = hv_fetch(Pending_conditionals, ch, KEY_SZ, 1);
if (SvROK(*cref))
conds = (AV *)SvRV(*cref);
else
*cref = newRV_inc((SV*) (conds = newAV()));
if (av_len(conds) < 0)
{
av_push(conds, newSViv(PTR2IV(next)));
av_push(conds, newSViv(PTR2IV(next->op_ppaddr)));
}
#ifdef USE_ITHREADS
conds = get_conds(aTHX_ conds);
#endif
cond = newSViv(PTR2IV(PL_op));
av_push(conds, cond);
NDEB(D(L, "Adding conditional %p (%s) "
"making %d at %p (%s), ppaddr: %p\n",
next, PL_op_name[next->op_targ], av_len(conds) - 1,
PL_op, hex_key(ch), next->op_ppaddr));
/* dump_conditions(aTHX); */
NDEB(svdump(Pending_conditionals));
NDEB(op_dump(PL_op));
NDEB(op_dump(next));
next->op_ppaddr = get_condition;
MUTEX_UNLOCK(&DC_mutex);
}
}
else
{
/* short circuit */
#if PERL_VERSION > 14
OP *up = cLOGOP->op_first->op_sibling->op_next;
while (up->op_type == PL_op->op_type)
{
NDEB(D(L, "Considering adding %p (%s) -> (%p) "
"from %p (%s) -> (%p)\n",
up, PL_op_name[up->op_type], up->op_next,
PL_op, PL_op_name[PL_op->op_type], PL_op->op_next));
add_conditional(aTHX_ up, 3);
if (up->op_next == PL_op->op_next)
break;
up = cLOGOPx(up)->op_first->op_sibling->op_next;
}
#endif
add_conditional(aTHX_ PL_op, 3);
}
}
}
static OP *dc_nextstate(pTHX)
{
dMY_CXT;
NDEB(D(L, "dc_nextstate\n"));
if (MY_CXT.covering) check_if_collecting(aTHX);
if (collecting_here(aTHX)) cover_current_statement(aTHX);
return MY_CXT.ppaddr[OP_NEXTSTATE](aTHX);
}
#if PERL_VERSION <= 10
static OP *dc_setstate(pTHX)
{
dMY_CXT;
if (MY_CXT.covering) check_if_collecting(aTHX);
if (collecting_here(aTHX)) cover_current_statement(aTHX);
return MY_CXT.ppaddr[OP_SETSTATE](aTHX);
}
#endif
static OP *dc_dbstate(pTHX)
{
dMY_CXT;
if (MY_CXT.covering) check_if_collecting(aTHX);
if (collecting_here(aTHX)) cover_current_statement(aTHX);
return MY_CXT.ppaddr[OP_DBSTATE](aTHX);
}
static OP *dc_entersub(pTHX)
{
dMY_CXT;
if (MY_CXT.covering) store_return(aTHX);
return MY_CXT.ppaddr[OP_ENTERSUB](aTHX);
}
static OP *dc_cond_expr(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_cond(aTHX);
return MY_CXT.ppaddr[OP_COND_EXPR](aTHX);
}
static OP *dc_and(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_AND](aTHX);
}
static OP *dc_andassign(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_ANDASSIGN](aTHX);
}
static OP *dc_or(pTHX)
{
dMY_CXT;
NDEB(D(L, "dc_or() at %p (%d)\n", PL_op, collecting_here(aTHX)));
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_OR](aTHX);
}
static OP *dc_orassign(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_ORASSIGN](aTHX);
}
#if PERL_VERSION > 8
static OP *dc_dor(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_DOR](aTHX);
}
static OP *dc_dorassign(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_DORASSIGN](aTHX);
}
#endif
OP *dc_xor(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) cover_logop(aTHX);
return MY_CXT.ppaddr[OP_XOR](aTHX);
}
static OP *dc_require(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) store_module(aTHX);
return MY_CXT.ppaddr[OP_REQUIRE](aTHX);
}
static OP *dc_exec(pTHX)
{
dMY_CXT;
if (MY_CXT.covering && collecting_here(aTHX)) call_report(aTHX);
return MY_CXT.ppaddr[OP_EXEC](aTHX);
}
static void replace_ops (pTHX) {
dMY_CXT;
int i;
NDEB(D(L, "initialising replace_ops\n"));
for (i = 0; i < MAXO; i++)
MY_CXT.ppaddr[i] = PL_ppaddr[i];
PL_ppaddr[OP_NEXTSTATE] = dc_nextstate;
#if PERL_VERSION <= 10
PL_ppaddr[OP_SETSTATE] = dc_setstate;
#endif
PL_ppaddr[OP_DBSTATE] = dc_dbstate;
PL_ppaddr[OP_ENTERSUB] = dc_entersub;
PL_ppaddr[OP_COND_EXPR] = dc_cond_expr;
PL_ppaddr[OP_AND] = dc_and;
PL_ppaddr[OP_ANDASSIGN] = dc_andassign;
PL_ppaddr[OP_OR] = dc_or;
PL_ppaddr[OP_ORASSIGN] = dc_orassign;
#if PERL_VERSION > 8
PL_ppaddr[OP_DOR] = dc_dor;
PL_ppaddr[OP_DORASSIGN] = dc_dorassign;
#endif
PL_ppaddr[OP_XOR] = dc_xor;
PL_ppaddr[OP_REQUIRE] = dc_require;
PL_ppaddr[OP_EXEC] = dc_exec;
}
static void initialise(pTHX)
{
dMY_CXT;
NDEB(D(L, "initialising\n"));
MUTEX_LOCK(&DC_mutex);
if (!Pending_conditionals)
{
Pending_conditionals = newHV();
#ifdef USE_ITHREADS
HvSHAREKEYS_off(Pending_conditionals);
#endif
}
if (!Return_ops)
{
Return_ops = newHV();
#ifdef USE_ITHREADS
HvSHAREKEYS_off(Return_ops);
#endif
}
MUTEX_UNLOCK(&DC_mutex);
MY_CXT.collecting_here = 1;
if (!MY_CXT.covering)
{
/* TODO - this probably leaks all over the place */
SV **tmp;
MY_CXT.cover = newHV();
#ifdef USE_ITHREADS
HvSHAREKEYS_off(MY_CXT.cover);
#endif
tmp = hv_fetch(MY_CXT.cover, "statement", 9, 1);
MY_CXT.statements = newHV();
*tmp = newRV_inc((SV*) MY_CXT.statements);
tmp = hv_fetch(MY_CXT.cover, "branch", 6, 1);
MY_CXT.branches = newHV();
*tmp = newRV_inc((SV*) MY_CXT.branches);
tmp = hv_fetch(MY_CXT.cover, "condition", 9, 1);
MY_CXT.conditions = newHV();
*tmp = newRV_inc((SV*) MY_CXT.conditions);
#if CAN_PROFILE
tmp = hv_fetch(MY_CXT.cover, "time", 4, 1);
MY_CXT.times = newHV();
*tmp = newRV_inc((SV*) MY_CXT.times);
#endif
tmp = hv_fetch(MY_CXT.cover, "module", 6, 1);
MY_CXT.modules = newHV();
*tmp = newRV_inc((SV*) MY_CXT.modules);
MY_CXT.files = get_hv("Devel::Cover::Files", FALSE);
#ifdef USE_ITHREADS
HvSHAREKEYS_off(MY_CXT.statements);
HvSHAREKEYS_off(MY_CXT.branches);
HvSHAREKEYS_off(MY_CXT.conditions);
#if CAN_PROFILE
HvSHAREKEYS_off(MY_CXT.times);
#endif
HvSHAREKEYS_off(MY_CXT.modules);
#endif
MY_CXT.profiling_key_valid = 0;
MY_CXT.module = newSVpv("", 0);
MY_CXT.lastfile = newSVpvn("", 1);
MY_CXT.covering = All;
MY_CXT.tid = tid++;
MY_CXT.replace_ops = SvTRUE(get_sv("Devel::Cover::Replace_ops", FALSE));
NDEB(D(L, "running with Replace_ops as %d\n", MY_CXT.replace_ops));
}
}
static int runops_cover(pTHX)
{
dMY_CXT;
NDEB(D(L, "entering runops_cover\n"));
#if defined HAS_GETTIMEOFDAY
elapsed();
#elif defined HAS_TIMES
cpu();
#endif
for (;;)
{
NDEB(D(L, "running func %p from %p (%s)\n",
PL_op->op_ppaddr, PL_op, OP_NAME(PL_op)));
if (!MY_CXT.covering)
goto call_fptr;
/* Nothing to collect when we've hijacked the ppaddr */
{
int hijacked;
MUTEX_LOCK(&DC_mutex);
hijacked = PL_op->op_ppaddr == get_condition;
MUTEX_UNLOCK(&DC_mutex);
if (hijacked)
goto call_fptr;
}
/* Check to see whether we are interested in this file */
if (PL_op->op_type == OP_NEXTSTATE)
{
check_if_collecting(aTHX);
}
else if (PL_op->op_type == OP_ENTERSUB)
{
store_return(aTHX);
}
if (!collecting_here(aTHX))
goto call_fptr;
/*
* We are about the run the op PL_op, so we'll collect
* information for it now.
*/
switch (PL_op->op_type)
{
case OP_NEXTSTATE:
#if PERL_VERSION <= 10
case OP_SETSTATE:
#endif
case OP_DBSTATE:
{
cover_current_statement(aTHX);
break;
}
case OP_COND_EXPR:
{
cover_cond(aTHX);
break;
}
case OP_AND:
case OP_ANDASSIGN:
case OP_OR:
case OP_ORASSIGN:
#if PERL_VERSION > 8
case OP_DOR:
case OP_DORASSIGN:
#endif
case OP_XOR:
{
cover_logop(aTHX);
break;
}
case OP_REQUIRE:
{
store_module(aTHX);
break;
}
case OP_EXEC:
{
call_report(aTHX);
break;
}
default:
; /* IBM's xlC compiler on AIX is very picky */
}
call_fptr:
if (!(PL_op = PL_op->op_ppaddr(aTHX)))
break;
PERL_ASYNC_CHECK();
}
#if CAN_PROFILE
cover_time(aTHX);
#endif
MY_CXT.collecting_here = 1;
NDEB(D(L, "exiting runops_cover\n"));
TAINT_NOT;
return 0;
}
static int runops_orig(pTHX)
{
NDEB(D(L, "entering runops_orig\n"));
while ((PL_op = PL_op->op_ppaddr(aTHX)))
{
PERL_ASYNC_CHECK();
}
NDEB(D(L, "exiting runops_orig\n"));
TAINT_NOT;
return 0;
}
static int runops_trace(pTHX)
{
PDEB(D(L, "entering runops_trace\n"));
for (;;)
{
PDEB(D(L, "running func %p from %p (%s)\n",
PL_op->op_ppaddr, PL_op, OP_NAME(PL_op)));
if (!(PL_op = PL_op->op_ppaddr(aTHX)))
break;
PERL_ASYNC_CHECK();
}
PDEB(D(L, "exiting runops_trace\n"));
TAINT_NOT;
return 0;
}
static char *svclassnames[] =
{
"B::NULL",
"B::IV",
"B::NV",
"B::RV",
"B::PV",
"B::PVIV",
"B::PVNV",
"B::PVMG",
"B::BM",
"B::GV",
"B::PVLV",
"B::AV",
"B::HV",
"B::CV",
"B::FM",
"B::IO",
};
static SV *make_sv_object(pTHX_ SV *arg, SV *sv)
{
IV iv;
char *type;
iv = PTR2IV(sv);
type = svclassnames[SvTYPE(sv)];
sv_setiv(newSVrv(arg, type), iv);
return arg;
}
typedef OP *B__OP;
typedef AV *B__AV;
MODULE = Devel::Cover PACKAGE = Devel::Cover
PROTOTYPES: ENABLE
void
set_criteria(flag)
unsigned flag
PREINIT:
dMY_CXT;
PPCODE:
MY_CXT.covering = flag;
/* fprintf(stderr, "Cover set to %d\n", flag); */
if (MY_CXT.replace_ops) {
return;
}
PL_runops = MY_CXT.covering ? runops_cover : runops_orig;
void
add_criteria(flag)
unsigned flag
PREINIT:
dMY_CXT;
PPCODE:
MY_CXT.covering |= flag;
if (MY_CXT.replace_ops) {
return;
}
PL_runops = MY_CXT.covering ? runops_cover : runops_orig;
void
remove_criteria(flag)
unsigned flag
PREINIT:
dMY_CXT;
PPCODE:
MY_CXT.covering &= ~flag;
if (MY_CXT.replace_ops) {
return;
}
PL_runops = MY_CXT.covering ? runops_cover : runops_orig;
unsigned
get_criteria()
PREINIT:
dMY_CXT;
CODE:
RETVAL = MY_CXT.covering;
OUTPUT:
RETVAL
unsigned
coverage_none()
CODE:
RETVAL = None;
OUTPUT:
RETVAL
unsigned
coverage_statement()
CODE:
RETVAL = Statement;
OUTPUT:
RETVAL
unsigned
coverage_branch()
CODE:
RETVAL = Branch;
OUTPUT:
RETVAL
unsigned
coverage_condition()
CODE:
RETVAL = Condition;
OUTPUT:
RETVAL
unsigned
coverage_subroutine()
CODE:
RETVAL = Subroutine;
OUTPUT:
RETVAL
unsigned
coverage_path()
CODE:
RETVAL = Path;
OUTPUT:
RETVAL
unsigned
coverage_pod()
CODE:
RETVAL = Pod;
OUTPUT:
RETVAL
unsigned
coverage_time()
CODE:
RETVAL = Time;
OUTPUT:
RETVAL
unsigned
coverage_all()
CODE:
RETVAL = All;
OUTPUT:
RETVAL
double
get_elapsed()
CODE:
#ifdef HAS_GETTIMEOFDAY
RETVAL = get_elapsed();
#else
RETVAL = 0;
#endif
OUTPUT:
RETVAL
SV *
coverage(final)
unsigned final
PREINIT:
dMY_CXT;
CODE:
NDEB(D(L, "Getting coverage %d\n", final));
if (final) finalise_conditions(aTHX);
if (MY_CXT.cover)
RETVAL = newRV_inc((SV*) MY_CXT.cover);
else
RETVAL = &PL_sv_undef;
OUTPUT:
RETVAL
SV *
get_key(o)
B::OP o
CODE:
RETVAL = newSV(KEY_SZ + 1);
sv_setpvn(RETVAL, get_key(o), KEY_SZ);
OUTPUT:
RETVAL
void
set_first_init_and_end()
PPCODE:
set_firsts_if_needed(aTHX);
void
collect_inits()
PREINIT:
dMY_CXT;
PPCODE:
int i;
NDEB(svdump(end));
if (!MY_CXT.ends) MY_CXT.ends = newAV();
if (PL_initav)
for (i = 0; i <= av_len(PL_initav); i++)
{
SV **cv = av_fetch(PL_initav, i, 0);
SvREFCNT_inc(*cv);
av_push(MY_CXT.ends, *cv);
}
void
set_last_end()
PREINIT:
dMY_CXT;
PPCODE:
int i;
SV *end = (SV *)get_cv("last_end", 0);
av_push(PL_endav, end);
NDEB(svdump(end));
if (!MY_CXT.ends) MY_CXT.ends = newAV();
if (PL_endav)
for (i = 0; i <= av_len(PL_endav); i++)
{
SV **cv = av_fetch(PL_endav, i, 0);
SvREFCNT_inc(*cv);
av_push(MY_CXT.ends, *cv);
}
B::AV
get_ends()
PREINIT:
dMY_CXT;
CODE:
if (!MY_CXT.ends) MY_CXT.ends = newAV(); /* TODO: how? */
RETVAL = MY_CXT.ends;
OUTPUT:
RETVAL
BOOT:
{
MY_CXT_INIT;
#ifdef USE_ITHREADS
MUTEX_INIT(&DC_mutex);
#endif
initialise(aTHX);
if (MY_CXT.replace_ops) {
replace_ops(aTHX);
#if defined HAS_GETTIMEOFDAY
elapsed();
#elif defined HAS_TIMES
cpu();
#endif
/* PL_runops = runops_trace; */
}
else {
PL_runops = runops_cover;
}
#if PERL_VERSION > 6
PL_savebegin = TRUE;
#endif
}
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