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-rw-r--r--erts/emulator/beam/beam_bp.c27
-rw-r--r--erts/emulator/beam/beam_bp.h16
-rw-r--r--erts/emulator/beam/beam_emu.c4
3 files changed, 25 insertions, 22 deletions
diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c
index 79d150c9e2..424e3324f9 100644
--- a/erts/emulator/beam/beam_bp.c
+++ b/erts/emulator/beam/beam_bp.c
@@ -439,9 +439,7 @@ erts_is_count_break(BeamInstr *pc, Sint *count_ret) {
if (bdc) {
if (count_ret) {
- ErtsSmpBPLock(bdc);
- *count_ret = bdc->count;
- ErtsSmpBPUnlock(bdc);
+ *count_ret = (Sint) erts_smp_atomic_read(&bdc->acount);
}
return !0;
}
@@ -976,16 +974,23 @@ static int set_function_break(Module *modp, BeamInstr *pc,
ASSERT(is_nil(tracer_pid));
if (break_op == (BeamInstr) BeamOp(op_i_count_breakpoint)) {
BpDataCount *bdc = (BpDataCount *) bd;
+ long count = 0;
+ long res = 0;
- ErtsSmpBPLock(bdc);
if (count_op == erts_break_stop) {
- if (bdc->count >= 0) {
- bdc->count = -bdc->count-1; /* Stop call counter */
+ count = erts_smp_atomic_read(&bdc->acount);
+ if (count >= 0) {
+ while(1) {
+ res = erts_smp_atomic_cmpxchg(&bdc->acount, -count - 1, count);
+ if ((res == count) || count < 0) break;
+ count = res;
+ }
}
} else {
- bdc->count = 0; /* Reset call counter */
+ /* Reset call counter */
+ erts_smp_atomic_set(&bdc->acount, 0);
}
- ErtsSmpBPUnlock(bdc);
+
} else if (break_op == (Uint) BeamOp(op_i_time_breakpoint)) {
BpDataTime *bdt = (BpDataTime *) bd;
Uint i = 0;
@@ -1015,8 +1020,7 @@ static int set_function_break(Module *modp, BeamInstr *pc,
ASSERT(! match_spec);
ASSERT(is_nil(tracer_pid));
if (break_op == (BeamInstr) BeamOp(op_i_count_breakpoint)) {
- if (count_op == erts_break_reset
- || count_op == erts_break_stop) {
+ if (count_op == erts_break_reset || count_op == erts_break_stop) {
/* Do not insert a new breakpoint */
return 1;
}
@@ -1108,8 +1112,7 @@ static int set_function_break(Module *modp, BeamInstr *pc,
}
} else if (break_op == (BeamInstr) BeamOp(op_i_count_breakpoint)) {
BpDataCount *bdc = (BpDataCount *) bd;
-
- bdc->count = 0;
+ erts_smp_atomic_init(&bdc->acount, 0);
}
++(*(BeamInstr*)&code_base[MI_NUM_BREAKPOINTS]);
return 1;
diff --git a/erts/emulator/beam/beam_bp.h b/erts/emulator/beam/beam_bp.h
index b76e0c01e7..d22dd5de87 100644
--- a/erts/emulator/beam/beam_bp.h
+++ b/erts/emulator/beam/beam_bp.h
@@ -93,7 +93,7 @@ typedef struct bp_data_count { /* Call count */
struct bp_data *prev;
BeamInstr orig_instr;
BeamInstr this_instr; /* key */
- Sint count;
+ erts_smp_atomic_t acount;
} BpDataCount;
typedef struct {
@@ -152,11 +152,12 @@ ERTS_INLINE Uint bp_sched2ix(void);
#define bp_sched2ix_proc(p) (0)
#endif
-#define ErtsCountBreak(pc,instr_result) \
+#define ErtsCountBreak(p, pc,instr_result) \
do { \
BpData **bds = (BpData **) (pc)[-4]; \
BpDataCount *bdc = NULL; \
- Uint ix = bp_sched2ix(); \
+ Uint ix = bp_sched2ix_proc( (p) ); \
+ long count = 0; \
\
ASSERT((pc)[-5] == (BeamInstr) BeamOp(op_i_func_info_IaaI)); \
ASSERT(bds); \
@@ -164,17 +165,16 @@ do { \
bdc = (BpDataCount *) bdc->next; \
ASSERT(bdc); \
bds[ix] = (BpData *) bdc; \
- ErtsSmpBPLock(bdc); \
- if (bdc->count >= 0) bdc->count++; \
- ErtsSmpBPUnlock(bdc); \
+ count = erts_smp_atomic_read(&bdc->acount); \
+ if (count >= 0) erts_smp_atomic_inc(&bdc->acount); \
*(instr_result) = bdc->orig_instr; \
} while (0)
-#define ErtsBreakSkip(pc,instr_result) \
+#define ErtsBreakSkip(p, pc,instr_result) \
do { \
BpData **bds = (BpData **) (pc)[-4]; \
BpData *bd = NULL; \
- Uint ix = bp_sched2ix(); \
+ Uint ix = bp_sched2ix_proc( (p) ); \
\
ASSERT((pc)[-5] == (BeamInstr) BeamOp(op_i_func_info_IaaI)); \
ASSERT(bds); \
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 6313319b9b..d543006b62 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -4404,7 +4404,7 @@ apply_bif_or_nif_epilogue:
OpCase(i_count_breakpoint): {
BeamInstr real_I;
- ErtsCountBreak((BeamInstr *) I, &real_I);
+ ErtsCountBreak(c_p, (BeamInstr *) I, &real_I);
ASSERT(VALID_INSTR(real_I));
Goto(real_I);
}
@@ -4485,7 +4485,7 @@ apply_bif_or_nif_epilogue:
if (! IS_TRACED_FL(c_p, F_TRACE_CALLS)) {
BeamInstr real_I;
- ErtsBreakSkip((BeamInstr *) I, &real_I);
+ ErtsBreakSkip(c_p, (BeamInstr *) I, &real_I);
Goto(real_I);
}
/* Fall through to next case */