Author: Remi Meier <[email protected]>
Branch: stmgc-c8-gcc
Changeset: r78752:e61b8f6ff5db
Date: 2015-08-03 15:41 +0200
http://bitbucket.org/pypy/pypy/changeset/e61b8f6ff5db/
Log: produce the perf-PID.map directly from pypy
Produce the jitted code to trace name mapping for perf directly in
PyPy. Should probably become a profagent in the future.
diff --git a/rpython/jit/backend/llsupport/assembler.py
b/rpython/jit/backend/llsupport/assembler.py
--- a/rpython/jit/backend/llsupport/assembler.py
+++ b/rpython/jit/backend/llsupport/assembler.py
@@ -12,7 +12,7 @@
from rpython.rlib.objectmodel import specialize, compute_unique_id
from rpython.rtyper.annlowlevel import cast_instance_to_gcref, llhelper
from rpython.rtyper.lltypesystem import rffi, lltype
-
+from rpython.jit.backend.x86 import perf_map
DEBUG_COUNTER = lltype.Struct('DEBUG_COUNTER',
# 'b'ridge, 'l'abel or # 'e'ntry point
@@ -407,8 +407,11 @@
gcrootmap = self.cpu.gc_ll_descr.gcrootmap
return bool(gcrootmap) and not gcrootmap.is_shadow_stack
+def debug_bridge(descr_number, rawstart, codeendpos):
+ perf_map.write_perf_map_entry(
+ "bridge out of Guard 0x%x" % r_uint(descr_number),
+ r_uint(rawstart), r_uint(rawstart + codeendpos))
-def debug_bridge(descr_number, rawstart, codeendpos):
debug_start("jit-backend-addr")
debug_print("bridge out of Guard 0x%x has address 0x%x to 0x%x" %
(r_uint(descr_number), r_uint(rawstart),
diff --git a/rpython/jit/backend/x86/assembler.py
b/rpython/jit/backend/x86/assembler.py
--- a/rpython/jit/backend/x86/assembler.py
+++ b/rpython/jit/backend/x86/assembler.py
@@ -38,6 +38,7 @@
from rpython.rlib.rarithmetic import intmask, r_uint
from rpython.rlib.objectmodel import compute_unique_id
from rpython.rlib import rstm, nonconst
+from rpython.jit.backend.x86 import perf_map
class Assembler386(BaseAssembler):
@@ -629,9 +630,13 @@
self.patch_stack_checks(frame_depth_no_fixed_size +
JITFRAME_FIXED_SIZE,
rawstart)
looptoken._ll_loop_code = looppos + rawstart
+ #
+ name = "Loop %d (%s)" % (looptoken.number, loopname)
+ perf_map.write_perf_map_entry(
+ name, r_uint(rawstart), r_uint(rawstart + full_size))
debug_start("jit-backend-addr")
- debug_print("Loop %d (%s) has address 0x%x to 0x%x (bootstrap 0x%x)" %
(
- looptoken.number, loopname,
+ debug_print("%s has address 0x%x to 0x%x (bootstrap 0x%x)" % (
+ name,
r_uint(rawstart + looppos),
r_uint(rawstart + size_excluding_failure_stuff),
r_uint(rawstart)))
diff --git a/rpython/jit/backend/x86/perf_map.py
b/rpython/jit/backend/x86/perf_map.py
new file mode 100644
--- /dev/null
+++ b/rpython/jit/backend/x86/perf_map.py
@@ -0,0 +1,40 @@
+"""
+Support for generating a perf map in /tmp/perf-PID.map
+"""
+
+from rpython.rtyper.lltypesystem import lltype, llmemory, rffi
+from rpython.translator.tool.cbuild import ExternalCompilationInfo
+
+eci = ExternalCompilationInfo(separate_module_sources = [r"""
+#include <unistd.h>
+
+FILE *pypy_perf_map_file = NULL;
+
+RPY_EXPORTED void perf_map_write_entry(
+ const char *name,
+ size_t start_addr,
+ size_t end_addr) {
+
+ if (!pypy_perf_map_file) {
+ char pmap_filename[100];
+ snprintf(pmap_filename, 100, "/tmp/perf-%d.map", getpid());
+ pypy_perf_map_file = fopen(pmap_filename, "w");
+ }
+
+ fprintf(pypy_perf_map_file, "%lx %lx %s\n", start_addr,
+ end_addr - start_addr, name);
+}
+"""])
+
+_perf_map_write_entry = rffi.llexternal(
+ 'perf_map_write_entry',
+ [rffi.CCHARP , lltype.Unsigned, lltype.Unsigned], lltype.Void,
+ compilation_info=eci,
+ _nowrapper=True, transactionsafe=True)
+
+# ____________________________________________________________
+
+def write_perf_map_entry(name, start_addr, end_addr):
+ # XXX: should be a profagent
+ with rffi.scoped_str2charp("JIT: " + name) as loopname:
+ _perf_map_write_entry(loopname, start_addr, end_addr)
diff --git a/rpython/translator/stm/test/targetjit1.py
b/rpython/translator/stm/test/targetjit1.py
--- a/rpython/translator/stm/test/targetjit1.py
+++ b/rpython/translator/stm/test/targetjit1.py
@@ -125,9 +125,8 @@
def start_thread(args):
bootstrapper.acquire(args)
try:
- rthread.gc_thread_prepare() # (this has no effect any more)
ident = rthread.start_new_thread(bootstrapper.bootstrap, ())
- except Exception, e:
+ except Exception:
bootstrapper.release() # normally called by the new thread
raise
return ident
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