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Jeff Muizelaar jrmuizel

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jrmuizel / gist:d8ff86d67e478c1ad7706f1679497fde
Created April 4, 2025 02:50
This file has been truncated, but you can view the full file.
./dist/bin/libxul.so: file format elf64-little
SYMBOL TABLE:
000000000886a8d0 l .data.rel.ro 0000000000000000 $d.2
000000000886a8d0 l O .data.rel.ro 0000000000000008 .hidden __dso_handle
000000000886a8d8 l .data.rel.ro 0000000000000000 $d
000000000886aa40 l .data.rel.ro 0000000000000000 $d
000000000886b540 l .data.rel.ro 0000000000000000 $d
000000000886b610 l .data.rel.ro 0000000000000000 $d
@jrmuizel
jrmuizel / vt.html
Created February 19, 2025 19:33
<!doctype html>
<style>
.child {
position: absolute;
left: 10px;
width: 50px;
height: 50px;
background: lightblue;
border: 1px solid black;
@jrmuizel
jrmuizel / profiling-python-with-perf.md
Last active November 14, 2025 20:53
Profiling python with perf

Get a Python that has frame pointers enabled

CFLAGS="-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer" pyenv install 3.13

pyenv shell 3.13

Run python with perf support turned on

@jrmuizel
jrmuizel / build.patch
Created March 3, 2024 20:01
diff --git a/build/config/compiler/pgo/BUILD.gn b/build/config/compiler/pgo/BUILD.gn
index f8293b2ef03f9..97e985cecc374 100644
--- a/build/config/compiler/pgo/BUILD.gn
+++ b/build/config/compiler/pgo/BUILD.gn
@@ -127,21 +127,21 @@ config("pgo_optimization_flags") {
# and at least some profile data always ends up being considered
# out of date, so make sure we don't error for those cases.
"-Wno-profile-instr-unprofiled",
"-Wno-profile-instr-out-of-date",
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jrmuizel / test.c
Last active February 9, 2024 17:25
#include <assert.h>
#include <bsm/audit.h>
#include <bsm/audit_session.h>
int main() {
auditinfo_addr_t auditInfo;
int result = getaudit_addr(&auditInfo, sizeof(auditInfo));
assert(result == 0 );
printf("got audit result: %d, uid %d\n", result, auditInfo.ai_auid);
@jrmuizel
jrmuizel / gist:f9b2b379986fa63fdece61109f52b93b
Created February 9, 2024 17:11
test.c
#include <assert.h>
#include <bsm/audit.h>
#include <bsm/audit_session.h>
int main() {
auditinfo_addr_t auditInfo;
int result = getaudit_addr(&auditInfo, sizeof(auditInfo));
assert(result == 0 );
if (auditInfo.ai_flags & AU_SESSION_FLAG_IS_INITIAL) {
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jrmuizel / moz2d circles
Last active June 12, 2023 14:52
diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp
index d84935f7c3f00..712ba15324623 100644
--- a/dom/canvas/CanvasRenderingContext2D.cpp
+++ b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -1054,21 +1054,20 @@ CanvasRenderingContext2D::CanvasRenderingContext2D(
mOpaqueAttrValue(false),
mContextAttributesHasAlpha(true),
mOpaque(false),
mResetLayer(true),
mIPC(false),
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jrmuizel / gist:ff20405c9cbee52f1f03bdc19a279dd8
Created June 22, 2022 14:17
06-22 12:44:24.176 3350 3365 I Gecko : {"action":"test_start","time":1655901864176,"thread":null,"pid":null,"source":"reftest","test":"image/test/crashtests/944353.jpg"}
06-22 12:44:24.177 3350 3365 I Gecko : REFTEST TEST-LOAD | http://10.0.2.2:8854/tests/image/test/crashtests/944353.jpg | 1381 / 3939 (35%)
06-22 12:44:24.177 3350 3365 I Gecko :
06-22 12:44:24.177 3350 3365 I Gecko : {"action":"log","time":1655901864177,"thread":null,"pid":null,"source":"reftest","level":"DEBUG","message":"START http://10.0.2.2:8854/tests/image/test/crashtests/944353.jpg"}
06-22 12:44:24.188 3425 3449 E eglCodecCommon: glUtilsParamSize: unknow param 0x00008caa
06-22 12:44:24.269 3375 3478 I Gecko : LaunchDecodingAsync http://10.0.2.2:8854/tests/image/test/crashtests/944353.jpg
06-22 12:44:24.269 3375 3503 I Gecko : DecodingTask::Run(0x7b07e1bc2430)
06-22 12:44:24.275 3350 3365 D GeckoViewContent: handleEvent: pagetitlechanged
06-22 12:44:24.287 3375 3392 I Gecko : LookupFrame http://10.0.2.2:8
@jrmuizel
jrmuizel / gist:cc1ebd9ab02b5ce45fdbc38c6a1cbe1e
Created May 25, 2021 20:03
blendTextureLinearR8 inner loop
+0x210 movaps -288(%rbp), %xmm0
+0x217 maxps -464(%rbp), %xmm0
+0x21e minps -448(%rbp), %xmm0
+0x225 movaps -304(%rbp), %xmm2
+0x22c maxps -496(%rbp), %xmm2
+0x233 minps -480(%rbp), %xmm2
+0x23a cvttps2dq %xmm0, %xmm1
+0x23e cvttps2dq %xmm2, %xmm0
+0x242 movdqa %xmm1, %xmm2
+0x246 pcmpeqd %xmm12, %xmm12
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jrmuizel / d3d.asm
Created May 7, 2021 16:19
gen6 min d3d asm
vs_4_1
dcl_globalFlags refactoringAllowed
dcl_constantbuffer cb0[5], immediateIndexed
dcl_resource_texture2d (float,float,float,float) textures2D[2] (t2)
dcl_input v0.xy
dcl_output_siv o0.xyzw, position
dcl_output o1.xyzw
dcl_output o2.xy
dcl_temps 3
0: mul r0.xy, v0.xyxx, l(427.0000, 640.0000, 0.0000, 0.0000)