Add simple profile filter rust script (#1065)
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124
filter_profile.rs
Executable file
124
filter_profile.rs
Executable file
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#!/bin/bash
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#![forbid(unsafe_code)]/* This line is ignored by bash
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# This block is ignored by rustc
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CHANNEL="release"
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source ./config.sh
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CG_CLIF_JIT=1 PROFILE=$1 OUTPUT=$2 exec $RUSTC $0 --crate-type bin -Cprefer-dynamic
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#*/
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//! This program filters away uninteresting samples and trims uninteresting frames for stackcollapse
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//! profiles.
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//!
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//! Usage: ./filter_profile.rs <profile in stackcollapse format> <output file>
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//!
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//! This file is specially crafted to be both a valid bash script and valid rust source file. If
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//! executed as bash script this will run the rust source using cg_clif in JIT mode.
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use std::io::Write;
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let profile_name = std::env::var("PROFILE").unwrap();
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let output_name = std::env::var("OUTPUT").unwrap();
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if profile_name.is_empty() || output_name.is_empty() {
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println!("Usage: ./filter_profile.rs <profile in stackcollapse format> <output file>");
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std::process::exit(1);
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}
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let profile = std::fs::read_to_string(profile_name)
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.map_err(|err| format!("Failed to read profile {}", err))?;
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let mut output = std::fs::OpenOptions::new()
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.create(true)
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.write(true)
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.truncate(true)
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.open(output_name)?;
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for line in profile.lines() {
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let mut stack = &line[..line.rfind(" ").unwrap()];
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let count = &line[line.rfind(" ").unwrap() + 1..];
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// Filter away uninteresting samples
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if !stack.contains("rustc_codegen_cranelift") {
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continue;
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}
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if stack.contains("rustc_mir::monomorphize::partitioning::collect_and_partition_mono_items")
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|| stack.contains("rustc_incremental::assert_dep_graph::assert_dep_graph")
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|| stack.contains("rustc_symbol_mangling::test::report_symbol_names")
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{
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continue;
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}
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// Trim start
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if let Some(index) = stack.find("rustc_interface::passes::configure_and_expand") {
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stack = &stack[index..];
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} else if let Some(index) = stack.find("rustc_interface::passes::analysis") {
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stack = &stack[index..];
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} else if let Some(index) = stack.find("rustc_interface::passes::start_codegen") {
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stack = &stack[index..];
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} else if let Some(index) = stack.find("rustc_interface::queries::Linker::link") {
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stack = &stack[index..];
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}
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if let Some(index) = stack.find("rustc_codegen_cranelift::driver::aot::module_codegen") {
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stack = &stack[index..];
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}
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// Trim end
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const MALLOC: &str = "malloc";
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if let Some(index) = stack.find(MALLOC) {
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stack = &stack[..index + MALLOC.len()];
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}
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const FREE: &str = "free";
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if let Some(index) = stack.find(FREE) {
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stack = &stack[..index + FREE.len()];
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}
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const TYPECK_ITEM_BODIES: &str = "rustc_typeck::check::typeck_item_bodies";
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if let Some(index) = stack.find(TYPECK_ITEM_BODIES) {
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stack = &stack[..index + TYPECK_ITEM_BODIES.len()];
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}
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const COLLECT_AND_PARTITION_MONO_ITEMS: &str =
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"rustc_mir::monomorphize::partitioning::collect_and_partition_mono_items";
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if let Some(index) = stack.find(COLLECT_AND_PARTITION_MONO_ITEMS) {
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stack = &stack[..index + COLLECT_AND_PARTITION_MONO_ITEMS.len()];
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}
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const ASSERT_DEP_GRAPH: &str = "rustc_incremental::assert_dep_graph::assert_dep_graph";
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if let Some(index) = stack.find(ASSERT_DEP_GRAPH) {
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stack = &stack[..index + ASSERT_DEP_GRAPH.len()];
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}
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const REPORT_SYMBOL_NAMES: &str = "rustc_symbol_mangling::test::report_symbol_names";
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if let Some(index) = stack.find(REPORT_SYMBOL_NAMES) {
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stack = &stack[..index + REPORT_SYMBOL_NAMES.len()];
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}
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const ENCODE_METADATA: &str = "rustc_middle::ty::context::TyCtxt::encode_metadata";
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if let Some(index) = stack.find(ENCODE_METADATA) {
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stack = &stack[..index + ENCODE_METADATA.len()];
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}
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const SUBST_AND_NORMALIZE_ERASING_REGIONS: &str = "rustc_middle::ty::normalize_erasing_regions::<impl rustc_middle::ty::context::TyCtxt>::subst_and_normalize_erasing_regions";
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if let Some(index) = stack.find(SUBST_AND_NORMALIZE_ERASING_REGIONS) {
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stack = &stack[..index + SUBST_AND_NORMALIZE_ERASING_REGIONS.len()];
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}
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const NORMALIZE_ERASING_LATE_BOUND_REGIONS: &str = "rustc_middle::ty::normalize_erasing_regions::<impl rustc_middle::ty::context::TyCtxt>::normalize_erasing_late_bound_regions";
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if let Some(index) = stack.find(NORMALIZE_ERASING_LATE_BOUND_REGIONS) {
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stack = &stack[..index + NORMALIZE_ERASING_LATE_BOUND_REGIONS.len()];
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}
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const INST_BUILD: &str = "<cranelift_frontend::frontend::FuncInstBuilder as cranelift_codegen::ir::builder::InstBuilderBase>::build";
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if let Some(index) = stack.find(INST_BUILD) {
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stack = &stack[..index + INST_BUILD.len()];
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}
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output.write_all(stack.as_bytes())?;
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output.write_all(&*b" ")?;
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output.write_all(count.as_bytes())?;
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output.write_all(&*b"\n")?;
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}
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Ok(())
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}
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