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log: Add locking to large logging blocks

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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
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2
target-sparc/translate.c
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@ -5796,10 +5796,12 @@ 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
}