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[Qemu-devel] [PATCH 4/4] log: Add locking to large logging blocks
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 4/4] log: Add locking to large logging blocks |
Date: |
Fri, 23 Sep 2016 08:29:11 -0700 |
Reuse the existing locking provided by stdio to keep in_asm, cpu,
op, op_opt, op_ind, and out_asm as contiguous blocks.
While it isn't possible to interleave e.g. in_asm or op_opt logs
because of the TB lock protecting all code generation, it is
possible to interleave cpu logs, or to interleave a cpu dump with
an out_asm dump.
Cc: Paolo Bonzini <address@hidden>
Cc: Alex Bennee <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
cpu-exec.c | 2 ++
exec.c | 2 ++
include/qemu/log.h | 16 ++++++++++++++++
target-alpha/translate.c | 2 ++
target-arm/translate-a64.c | 2 ++
target-arm/translate.c | 2 ++
target-cris/translate.c | 2 ++
target-i386/translate.c | 4 ++++
target-lm32/translate.c | 2 ++
target-m68k/translate.c | 2 ++
target-microblaze/translate.c | 2 ++
target-mips/translate.c | 2 ++
target-openrisc/translate.c | 2 ++
target-ppc/translate.c | 2 ++
target-s390x/translate.c | 2 ++
target-sh4/translate.c | 2 ++
target-sparc/translate.c | 2 ++
target-tilegx/translate.c | 6 +++++-
target-tricore/translate.c | 2 ++
target-unicore32/translate.c | 2 ++
target-xtensa/translate.c | 2 ++
tcg/tcg.c | 8 ++++++++
translate-all.c | 2 ++
23 files changed, 71 insertions(+), 1 deletion(-)
diff --git a/cpu-exec.c b/cpu-exec.c
index 9f4bd0b..7423049 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -149,6 +149,7 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu,
TranslationBlock *itb)
#if defined(DEBUG_DISAS)
if (qemu_loglevel_mask(CPU_LOG_TB_CPU)
&& qemu_log_in_addr_range(itb->pc)) {
+ qemu_log_lock();
#if defined(TARGET_I386)
log_cpu_state(cpu, CPU_DUMP_CCOP);
#elif defined(TARGET_M68K)
@@ -160,6 +161,7 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu,
TranslationBlock *itb)
#else
log_cpu_state(cpu, 0);
#endif
+ qemu_log_unlock();
}
#endif /* DEBUG_DISAS */
diff --git a/exec.c b/exec.c
index c81d5ab..f8ed786 100644
--- a/exec.c
+++ b/exec.c
@@ -905,11 +905,13 @@ void cpu_abort(CPUState *cpu, const char *fmt, ...)
fprintf(stderr, "\n");
cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP);
if (qemu_log_separate()) {
+ qemu_log_lock();
qemu_log("qemu: fatal: ");
qemu_log_vprintf(fmt, ap2);
qemu_log("\n");
log_cpu_state(cpu, CPU_DUMP_FPU | CPU_DUMP_CCOP);
qemu_log_flush();
+ qemu_log_unlock();
qemu_log_close();
}
va_end(ap2);
diff --git a/include/qemu/log.h b/include/qemu/log.h
index 00bf37f..aba3301 100644
--- a/include/qemu/log.h
+++ b/include/qemu/log.h
@@ -51,6 +51,22 @@ static inline bool qemu_loglevel_mask(int mask)
return (qemu_loglevel & mask) != 0;
}
+/* Lock output for a series of related logs. Since this is not needed
+ * for a single qemu_log / qemu_log_mask / qemu_log_mask_and_addr, we
+ * assume that qemu_loglevel_mask has already been tested, and that
+ * qemu_loglevel is never set when qemu_logfile is unset.
+ */
+
+static inline void qemu_log_lock(void)
+{
+ flockfile(qemu_logfile);
+}
+
+static inline void qemu_log_unlock(void)
+{
+ funlockfile(qemu_logfile);
+}
+
/* Logging functions: */
/* main logging function
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index c27c7b9..af717ca 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -3000,9 +3000,11 @@ void gen_intermediate_code(CPUAlphaState *env, struct
TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, ctx.pc - pc_start, 1);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index ddf52f5..60e8cf1 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -11356,11 +11356,13 @@ done_generating:
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) &&
qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc->pc - pc_start,
4 | (bswap_code(dc->sctlr_b) ? 2 : 0));
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
tb->size = dc->pc - pc_start;
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 693d4bc..f550b00 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -11998,11 +11998,13 @@ done_generating:
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) &&
qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc->pc - pc_start,
dc->thumb | (dc->sctlr_b << 1));
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
tb->size = dc->pc - pc_start;
diff --git a/target-cris/translate.c b/target-cris/translate.c
index 9de26af..81147bb 100644
--- a/target-cris/translate.c
+++ b/target-cris/translate.c
@@ -3290,12 +3290,14 @@ void gen_intermediate_code(CPUCRISState *env, struct
TranslationBlock *tb)
#if !DISAS_CRIS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("--------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc->pc - pc_start,
env->pregs[PR_VR]);
qemu_log("\nisize=%d osize=%d\n",
dc->pc - pc_start, tcg_op_buf_count());
+ qemu_log_unlock();
}
#endif
#endif
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 9447557..2f60e9c 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -2391,11 +2391,13 @@ static void gen_unknown_opcode(CPUX86State *env,
DisasContext *s)
if (qemu_loglevel_mask(LOG_UNIMP)) {
target_ulong pc = s->pc_start, end = s->pc;
+ qemu_log_lock();
qemu_log("ILLOPC: " TARGET_FMT_lx ":", pc);
for (; pc < end; ++pc) {
qemu_log(" %02x", cpu_ldub_code(env, pc));
}
qemu_log("\n");
+ qemu_log_unlock();
}
}
@@ -8362,6 +8364,7 @@ done_generating:
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
int disas_flags;
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
#ifdef TARGET_X86_64
@@ -8372,6 +8375,7 @@ done_generating:
disas_flags = !dc->code32;
log_target_disas(cs, pc_start, pc_ptr - pc_start, disas_flags);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
diff --git a/target-lm32/translate.c b/target-lm32/translate.c
index 2d8caeb..3d2cecb 100644
--- a/target-lm32/translate.c
+++ b/target-lm32/translate.c
@@ -1149,10 +1149,12 @@ void gen_intermediate_code(CPULM32State *env, struct
TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("\n");
log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
qemu_log("\nisize=%d osize=%d\n",
dc->pc - pc_start, tcg_op_buf_count());
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index ecd5e5c..43b9ea1 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -3070,10 +3070,12 @@ void gen_intermediate_code(CPUM68KState *env,
TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
tb->size = dc->pc - pc_start;
diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c
index 5a4a8b9..5274191 100644
--- a/target-microblaze/translate.c
+++ b/target-microblaze/translate.c
@@ -1813,12 +1813,14 @@ void gen_intermediate_code(CPUMBState *env, struct
TranslationBlock *tb)
#if !SIM_COMPAT
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("--------------\n");
#if DISAS_GNU
log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
#endif
qemu_log("\nisize=%d osize=%d\n",
dc->pc - pc_start, tcg_op_buf_count());
+ qemu_log_unlock();
}
#endif
#endif
diff --git a/target-mips/translate.c b/target-mips/translate.c
index bab52cb..3172f12 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -20015,9 +20015,11 @@ done_generating:
LOG_DISAS("\n");
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, ctx.pc - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-openrisc/translate.c b/target-openrisc/translate.c
index a4625f9..229361a 100644
--- a/target-openrisc/translate.c
+++ b/target-openrisc/translate.c
@@ -1750,11 +1750,13 @@ void gen_intermediate_code(CPUOpenRISCState *env,
struct TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
qemu_log("\nisize=%d osize=%d\n",
dc->pc - pc_start, tcg_op_buf_count());
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 618334a..6614094 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7174,9 +7174,11 @@ void gen_intermediate_code(CPUPPCState *env, struct
TranslationBlock *tb)
int flags;
flags = env->bfd_mach;
flags |= ctx.le_mode << 16;
+ qemu_log_lock();
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, ctx.nip - pc_start, flags);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index 1a07d70..02bc705 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -5432,9 +5432,11 @@ void gen_intermediate_code(CPUS390XState *env, struct
TranslationBlock *tb)
#if defined(S390X_DEBUG_DISAS)
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc.pc - pc_start, 1);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-sh4/translate.c b/target-sh4/translate.c
index ca80cf7..c89a147 100644
--- a/target-sh4/translate.c
+++ b/target-sh4/translate.c
@@ -1927,9 +1927,11 @@ void gen_intermediate_code(CPUSH4State * env, struct
TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("IN:\n"); /* , lookup_symbol(pc_start)); */
log_target_disas(cs, pc_start, ctx.pc - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index e7691e4..dc505f7 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -5672,10 +5672,12 @@ void gen_intermediate_code(CPUSPARCState * env,
TranslationBlock * tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("--------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, last_pc + 4 - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
index 11c9732..9c734ee 100644
--- a/target-tilegx/translate.c
+++ b/target-tilegx/translate.c
@@ -2391,6 +2391,7 @@ void gen_intermediate_code(CPUTLGState *env, struct
TranslationBlock *tb)
TCGV_UNUSED_I64(dc->zero);
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+ qemu_log_lock();
qemu_log("IN: %s\n", lookup_symbol(pc_start));
}
if (!max_insns) {
@@ -2429,7 +2430,10 @@ void gen_intermediate_code(CPUTLGState *env, struct
TranslationBlock *tb)
tb->size = dc->pc - pc_start;
tb->icount = num_insns;
- qemu_log_mask(CPU_LOG_TB_IN_ASM, "\n");
+ if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+ qemu_log("\n");
+ qemu_log_unlock();
+ }
}
void restore_state_to_opc(CPUTLGState *env, TranslationBlock *tb,
diff --git a/target-tricore/translate.c b/target-tricore/translate.c
index 9a50df9..36f734a 100644
--- a/target-tricore/translate.c
+++ b/target-tricore/translate.c
@@ -8789,9 +8789,11 @@ void gen_intermediate_code(CPUTriCoreState *env, struct
TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, ctx.pc - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
}
diff --git a/target-unicore32/translate.c b/target-unicore32/translate.c
index 09354f9..514d460 100644
--- a/target-unicore32/translate.c
+++ b/target-unicore32/translate.c
@@ -2024,10 +2024,12 @@ done_generating:
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
tb->size = dc->pc - pc_start;
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index 4c1e487..afbfa57 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -3156,10 +3156,12 @@ void gen_intermediate_code(CPUXtensaState *env,
TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
&& qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(cs, pc_start, dc.pc - pc_start, 0);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
tb->size = dc.pc - pc_start;
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 2d3e498..aabf94f 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -412,10 +412,12 @@ void tcg_prologue_init(TCGContext *s)
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM)) {
+ qemu_log_lock();
qemu_log("PROLOGUE: [size=%zu]\n", prologue_size);
log_disas(buf0, prologue_size);
qemu_log("\n");
qemu_log_flush();
+ qemu_log_unlock();
}
#endif
}
@@ -2542,9 +2544,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)
&& qemu_log_in_addr_range(tb->pc))) {
+ qemu_log_lock();
qemu_log("OP:\n");
tcg_dump_ops(s);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
@@ -2570,9 +2574,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_IND)
&& qemu_log_in_addr_range(tb->pc))) {
+ qemu_log_lock();
qemu_log("OP before indirect lowering:\n");
tcg_dump_ops(s);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
/* Replace indirect temps with direct temps. */
@@ -2590,9 +2596,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
#ifdef DEBUG_DISAS
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT)
&& qemu_log_in_addr_range(tb->pc))) {
+ qemu_log_lock();
qemu_log("OP after optimization and liveness analysis:\n");
tcg_dump_ops(s);
qemu_log("\n");
+ qemu_log_unlock();
}
#endif
diff --git a/translate-all.c b/translate-all.c
index e9bc90c..68f984d 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -1242,10 +1242,12 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM) &&
qemu_log_in_addr_range(tb->pc)) {
+ qemu_log_lock();
qemu_log("OUT: [size=%d]\n", gen_code_size);
log_disas(tb->tc_ptr, gen_code_size);
qemu_log("\n");
qemu_log_flush();
+ qemu_log_unlock();
}
#endif
--
2.7.4