log: Add locking to large logging blocks

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.

For mingw32, we appear to have no viable solution for this.  The locking
functions are not properly exported from the system runtime library.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-09-22 15:17:10 -07:00
parent 9acbf7d8ca
commit 1ee73216f4
25 changed files with 98 additions and 1 deletions

View file

@ -1355,10 +1355,12 @@ 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