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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /tools/profiler/rust-helper/src/compact_symbol_table.rs
parentInitial commit. (diff)
downloadfirefox-esr-upstream/115.8.0esr.tar.xz
firefox-esr-upstream/115.8.0esr.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/profiler/rust-helper/src/compact_symbol_table.rs')
-rw-r--r--tools/profiler/rust-helper/src/compact_symbol_table.rs40
1 files changed, 40 insertions, 0 deletions
diff --git a/tools/profiler/rust-helper/src/compact_symbol_table.rs b/tools/profiler/rust-helper/src/compact_symbol_table.rs
new file mode 100644
index 0000000000..12c4ca081b
--- /dev/null
+++ b/tools/profiler/rust-helper/src/compact_symbol_table.rs
@@ -0,0 +1,40 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use std::collections::HashMap;
+use thin_vec::ThinVec;
+
+#[repr(C)]
+pub struct CompactSymbolTable {
+ pub addr: ThinVec<u32>,
+ pub index: ThinVec<u32>,
+ pub buffer: ThinVec<u8>,
+}
+
+impl CompactSymbolTable {
+ pub fn new() -> Self {
+ Self {
+ addr: ThinVec::new(),
+ index: ThinVec::new(),
+ buffer: ThinVec::new(),
+ }
+ }
+
+ pub fn from_map(map: HashMap<u32, &str>) -> Self {
+ let mut table = Self::new();
+ let mut entries: Vec<_> = map.into_iter().collect();
+ entries.sort_by_key(|&(addr, _)| addr);
+ for (addr, name) in entries {
+ table.addr.push(addr);
+ table.index.push(table.buffer.len() as u32);
+ table.add_name(name);
+ }
+ table.index.push(table.buffer.len() as u32);
+ table
+ }
+
+ fn add_name(&mut self, name: &str) {
+ self.buffer.extend_from_slice(name.as_bytes());
+ }
+}