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yap-6.3
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if we use malloc, get memory out of malloc instead of using stacks. This is in order to avoid growing stacks that never contract again.

This commit is contained in:
Vitor Santos Costa 2010-03-31 15:51:18 +01:00
parent d49e139360
commit 9110c4db71
4 changed files with 111 additions and 11 deletions
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7
C/compiler.c
View File

@ -285,7 +285,11 @@ active_branch(int i, int onbranch)
#define FAIL(M,T,E) { Yap_ErrorMessage=M; Yap_Error_TYPE = T; Yap_Error_Term = E; return; }
#if USE_SYSTEM_MALLOC
#define IsNewVar(v) ((CELL *)(v) >= H0 && (CELL *)(v) < LCL0)
#else
#define IsNewVar(v) (Addr(v)<cglobs->cint.freep0 || Addr(v)>cglobs->cint.freep)
#endif
inline static void pop_code(unsigned int, compiler_struct *);
@ -3311,6 +3315,7 @@ Yap_cclause(volatile Term inp_clause, int NOfArgs, Term mod, volatile Term src)
if ((botch_why = setjmp(cglobs.cint.CompilerBotch))) {
restore_machine_regs();
reset_vars(cglobs.vtable);
Yap_ReleaseCMem(&cglobs.cint);
switch(botch_why) {
case OUT_OF_STACK_BOTCH:
/* out of local stack, just duplicate the stack */
@ -3398,6 +3403,7 @@ Yap_cclause(volatile Term inp_clause, int NOfArgs, Term mod, volatile Term src)
cglobs.cint.CodeStart = cglobs.cint.cpc = NULL;
cglobs.cint.BlobsStart = cglobs.cint.icpc = NULL;
cglobs.cint.dbterml = NULL;
cglobs.cint.blks = NULL;
cglobs.cint.freep =
cglobs.cint.freep0 =
(char *) (H + maxvnum+(sizeof(Int)/sizeof(CELL))*MaxTemps+MaxTemps);
@ -3555,6 +3561,7 @@ Yap_cclause(volatile Term inp_clause, int NOfArgs, Term mod, volatile Term src)
/* phase 3: assemble code */
acode = Yap_assemble(ASSEMBLING_CLAUSE, src, cglobs.cint.CurrentPred, (cglobs.is_a_fact && !cglobs.hasdbrefs && !(cglobs.cint.CurrentPred->PredFlags & TabledPredFlag)), &cglobs.cint);
/* check first if there was space for us */
Yap_ReleaseCMem (&cglobs.cint);
if (acode == NULL) {
return NULL;
} else {

33
C/computils.c
View File

@ -82,9 +82,25 @@ char Yap_Option[20];
YP_FILE *Yap_logfile;
#endif
typedef struct mem_blk {
struct mem_blk *next;
char contents[1];
} MemBlk;
static char *
AllocCMem (int size, struct intermediates *cip)
{
#if USE_SYSTEM_MALLOC
struct mem_blk *p = (struct mem_blk *)Yap_AllocCodeSpace(size+sizeof(struct mem_blk *));
if (!p) {
Yap_Error_Size = size;
save_machine_regs();
longjmp(cip->CompilerBotch, OUT_OF_HEAP_BOTCH);
}
p->next = cip->blks;
cip->blks = p;
return p->contents;
#else
char *p;
p = cip->freep;
#if SIZEOF_INT_P==8
@ -99,12 +115,27 @@ AllocCMem (int size, struct intermediates *cip)
longjmp(cip->CompilerBotch, OUT_OF_STACK_BOTCH);
}
return (p);
#endif
}
void
Yap_ReleaseCMem (struct intermediates *cip)
{
#if USE_SYSTEM_MALLOC
struct mem_blk *p = cip->blks;
while (p) {
struct mem_blk *nextp = p->next;
Yap_FreeCodeSpace((ADDR)p);
p = nextp;
}
cip->blks = NULL;
#endif
}
char *
Yap_AllocCMem (int size, struct intermediates *cip)
{
return(AllocCMem(size, cip));
return AllocCMem(size, cip);
}
static int

80
C/index.c
View File

@ -553,6 +553,7 @@ recover_from_failed_susp_on_cls(struct intermediates *cint, UInt sz)
OPCODE ecls = Yap_opcode(_expand_clauses);
UInt log_upd_pred = cint->CurrentPred->PredFlags & LogUpdatePredFlag;
Yap_ReleaseCMem(cint);
while (cpc) {
switch(cpc->op) {
case enter_lu_op:
@ -825,30 +826,36 @@ static void
sort_group(GroupDef *grp, CELL *top, struct intermediates *cint)
{
int max = (grp->LastClause-grp->FirstClause)+1, i;
CELL *pt = top;
CELL *pt, *base;
while (top+2*max > (CELL *)Yap_TrailTop) {
#if USE_SYSTEM_MALLOC
Yap_Error_Size = 2*max*sizeof(CELL);
/* grow stack */
if (!(base = (CELL *)Yap_AllocCodeSpace(2*max*sizeof(CELL)))) {
save_machine_regs();
longjmp(cint->CompilerBotch,4);
Yap_Error_Size = 2*max*sizeof(CELL);
longjmp(cint->CompilerBotch,2);
}
#else
base = top;
while (top+2*max > (CELL *)Yap_TrailTop) {
if (!Yap_growtrail(2*max*CellSize, TRUE)) {
save_machine_regs();
longjmp(cint->CompilerBotch,4);
return;
}
#endif
}
#endif
pt = base;
/* initialise vector */
for (i=0; i < max; i++) {
*pt = i;
pt += 2;
}
#define M_EVEN 0
msort(grp->FirstClause, top, max, M_EVEN);
copy_back(grp->FirstClause, top, max);
msort(grp->FirstClause, base, max, M_EVEN);
copy_back(grp->FirstClause, base, max);
#if USE_SYSTEM_MALLOC
Yap_FreeCodeSpace((ADDR)base);
#endif
}
/* add copy to register stack for original reg */
@ -3299,14 +3306,27 @@ compile_index(struct intermediates *cint)
{
PredEntry *ap = cint->CurrentPred;
int NClauses = ap->cs.p_code.NOfClauses;
ClauseDef *cls = (ClauseDef *)H;
ClauseDef *cls;
CELL *top = (CELL *) TR;
UInt res;
/* only global variable I use directly */
cint->i_labelno = 1;
Yap_Error_Size = 0;
#if USE_SYSTEM_MALLOC
cls = (ClauseDef *)Yap_AllocCodeSpace(NClauses*sizeof(ClauseDef));
if (!cls) {
/* tell how much space we need */
Yap_Error_Size += NClauses*sizeof(ClauseDef);
/* grow stack */
save_machine_regs();
longjmp(cint->CompilerBotch,2);
}
cint->freep = (char *)H;
#else
/* reserve double the space for compiler */
cls = (ClauseDef *)H;
if (cls+2*NClauses > (ClauseDef *)(ASP-4096)) {
/* tell how much space we need */
Yap_Error_Size += NClauses*sizeof(ClauseDef);
@ -3315,6 +3335,7 @@ compile_index(struct intermediates *cint)
longjmp(cint->CompilerBotch,3);
}
cint->freep = (char *)(cls+NClauses);
#endif
if (ap->PredFlags & LogUpdatePredFlag) {
/* throw away a label */
new_label(cint);
@ -3327,7 +3348,11 @@ compile_index(struct intermediates *cint)
/* prepare basic data structures */
init_clauses(cls,ap);
}
return do_index(cls, cls+(NClauses-1), cint, 1, (UInt)FAILCODE, TRUE, 0, top);
res = do_index(cls, cls+(NClauses-1), cint, 1, (UInt)FAILCODE, TRUE, 0, top);
#if USE_SYSTEM_MALLOC
Yap_FreeCodeSpace((ADDR)cls);
#endif
return res;
}
@ -3341,6 +3366,7 @@ Yap_PredIsIndexable(PredEntry *ap, UInt NSlots, yamop *next_pc)
cint.CurrentPred = ap;
cint.code_addr = NULL;
cint.blks = NULL;
Yap_Error_Size = 0;
if ((setjres = setjmp(cint.CompilerBotch)) == 3) {
@ -4312,6 +4338,16 @@ expand_index(struct intermediates *cint) {
yamop **clp = (yamop **)NEXTOP(ipc,sssllp);
eblk = cint->expand_block = ipc;
#if USE_SYSTEM_MALLOC
cls = (ClauseDef *)Yap_AllocCodeSpace(nclauses*sizeof(ClauseDef));
if (!cls) {
/* tell how much space we need */
Yap_Error_Size += NClauses*sizeof(ClauseDef);
/* grow stack */
save_machine_regs();
longjmp(cint->CompilerBotch,2);
}
#else
if (cls+2*nclauses > (ClauseDef *)(ASP-4096)) {
/* tell how much space we need (worst case) */
Yap_Error_Size += 2*NClauses*sizeof(ClauseDef);
@ -4319,6 +4355,7 @@ expand_index(struct intermediates *cint) {
save_machine_regs();
longjmp(cint->CompilerBotch,3);
}
#endif
if (ap->PredFlags & LogUpdatePredFlag) {
max = install_log_upd_clauseseq(cls, ap, stack, clp, clp+nclauses);
} else {
@ -4326,12 +4363,23 @@ expand_index(struct intermediates *cint) {
}
} else {
cint->expand_block = NULL;
#if USE_SYSTEM_MALLOC
cls = (ClauseDef *)Yap_AllocCodeSpace(NClauses*sizeof(ClauseDef));
if (!cls) {
/* tell how much space we need */
Yap_Error_Size += NClauses*sizeof(ClauseDef);
/* grow stack */
save_machine_regs();
longjmp(cint->CompilerBotch,2);
}
#else
if (cls+2*NClauses > (ClauseDef *)(ASP-4096)) {
/* tell how much space we need (worst case) */
Yap_Error_Size += 2*NClauses*sizeof(ClauseDef);
save_machine_regs();
longjmp(cint->CompilerBotch,3);
}
#endif
if (ap->PredFlags & LogUpdatePredFlag) {
max = install_log_upd_clauses(cls, ap, stack, first, last);
} else {
@ -4350,9 +4398,16 @@ expand_index(struct intermediates *cint) {
if (alt && max->Code == last) max--;
if (max < cls && labp != NULL) {
*labp = FAILCODE;
#if USE_SYSTEM_MALLOC
Yap_FreeCodeSpace((ADDR)cls);
#endif
return labp;
}
#if USE_SYSTEM_MALLOC
cint->freep = (char *)H;
#else
cint->freep = (char *)(max+1);
#endif
cint->CodeStart = cint->BlobsStart = cint->cpc = cint->icpc = NULL;
if (!IsVarTerm(sp[-1].val) && sp > stack) {
@ -4409,6 +4464,9 @@ expand_index(struct intermediates *cint) {
if (labp && !(lab & 1)) {
*labp = (yamop *)lab; /* in case we have a single clause */
}
#if USE_SYSTEM_MALLOC
Yap_FreeCodeSpace((ADDR)cls);
#endif
return labp;
}
@ -4420,6 +4478,7 @@ ExpandIndex(PredEntry *ap, int ExtraArgs, yamop *nextop) {
int cb;
struct intermediates cint;
cint.blks = NULL;
cint.code_addr = NULL;
if ((cb = setjmp(cint.CompilerBotch)) == 3) {
restore_machine_regs();
@ -4456,6 +4515,7 @@ ExpandIndex(PredEntry *ap, int ExtraArgs, yamop *nextop) {
}
} else if (cb == 4) {
restore_machine_regs();
Yap_ReleaseCMem(&cint);
if (!Yap_growtrail(Yap_Error_Size, FALSE)) {
save_machine_regs();
if (ap->PredFlags & LogUpdatePredFlag) {

2
H/compile.h
View File

@ -251,6 +251,7 @@ typedef struct CEXPENTRY {
typedef struct intermediates {
char *freep;
char *freep0;
struct mem_blk *blks;
struct PSEUDO *cpc;
struct PSEUDO *CodeStart;
struct PSEUDO *icpc;
@ -323,6 +324,7 @@ void STD_PROTO(Yap_emit_3ops,(compiler_vm_op,CELL,CELL,CELL, struct intermediate
void STD_PROTO(Yap_emit_4ops,(compiler_vm_op,CELL,CELL,CELL,CELL, struct intermediates *));
CELL *STD_PROTO(Yap_emit_extra_size,(compiler_vm_op,CELL,int, struct intermediates *));
char *STD_PROTO(Yap_AllocCMem,(int, struct intermediates *));
void STD_PROTO(Yap_ReleaseCMem, (struct intermediates *));
int STD_PROTO(Yap_is_a_test_pred,(Term, Term));
void STD_PROTO(Yap_bip_name,(Int, char *));
#ifdef DEBUG