wip tcmalloc

Cargo.lock

@@ -493,8 +493,10 @@ checksum = "c469d952047f47f91b68d1cba3f10d63c11d73e4636f24f08daf0278abf01c4d"
 dependencies = [
  "android-tzdata",
  "iana-time-zone",
+ "js-sys",
  "num-traits",
  "serde",
+ "wasm-bindgen",
  "windows-link",
 ]
 
@@ -583,6 +585,7 @@ dependencies = [
  "declare_clippy_lint",
  "filetime",
  "itertools",
+ "libtcmalloc-sys",
  "pulldown-cmark",
  "regex",
  "rustc_tools_util 0.4.2",
@@ -1194,6 +1197,15 @@ version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8975ffdaa0ef3661bfe02dbdcc06c9f829dfafe6a3c474de366a8d5e44276921"
 
+[[package]]
+name = "document-features"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95249b50c6c185bee49034bcb378a49dc2b5dff0be90ff6616d31d64febab05d"
+dependencies = [
+ "litrs",
+]
+
 [[package]]
 name = "dyn-clone"
 version = "1.0.19"
@@ -2161,6 +2173,18 @@ dependencies = [
  "redox_syscall",
 ]
 
+[[package]]
+name = "libtcmalloc-sys"
+version = "0.1.14"
+source = "git+https://github.com/0xdeafbeef/tcmalloc-better.git?rev=781a440a0919#781a440a091933e35ecbfd082fc0393bea6481ad"
+dependencies = [
+ "cc",
+ "document-features",
+ "libc",
+ "patch",
+ "strum 0.27.2",
+]
+
 [[package]]
 name = "libz-sys"
 version = "1.1.22"
@@ -2213,6 +2237,12 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "241eaef5fd12c88705a01fc1066c48c4b36e0dd4377dcdc7ec3942cea7a69956"
 
+[[package]]
+name = "litrs"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f5e54036fe321fd421e10d732f155734c4e4afd610dd556d9a82833ab3ee0bed"
+
 [[package]]
 name = "lld-wrapper"
 version = "0.1.0"
@@ -2392,6 +2422,7 @@ dependencies = [
  "libc",
  "libffi",
  "libloading",
+ "libtcmalloc-sys",
  "measureme",
  "nix",
  "rand 0.9.2",
@@ -2401,7 +2432,6 @@ dependencies = [
  "serde_json",
  "smallvec",
  "tempfile",
- "tikv-jemalloc-sys",
  "ui_test",
 ]
 
@@ -2437,6 +2467,17 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "nom_locate"
+version = "4.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e3c83c053b0713da60c5b8de47fe8e494fe3ece5267b2f23090a07a053ba8f3"
+dependencies = [
+ "bytecount",
+ "memchr",
+ "nom",
+]
+
 [[package]]
 name = "normpath"
 version = "1.3.0"
@@ -2752,6 +2793,17 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "patch"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15c07fdcdd8b05bdcf2a25bc195b6c34cbd52762ada9dba88bf81e7686d14e7a"
+dependencies = [
+ "chrono",
+ "nom",
+ "nom_locate",
+]
+
 [[package]]
 name = "pathdiff"
 version = "0.2.3"
@@ -3285,13 +3337,13 @@ checksum = "e4ee29da77c5a54f42697493cd4c9b9f31b74df666a6c04dfc4fde77abe0438b"
 name = "rustc-main"
 version = "0.0.0"
 dependencies = [
+ "libtcmalloc-sys",
  "rustc_codegen_ssa",
  "rustc_driver",
  "rustc_driver_impl",
  "rustc_public",
  "rustc_public_bridge",
  "rustc_windows_rc",
- "tikv-jemalloc-sys",
 ]
 
 [[package]]
@@ -4781,6 +4833,7 @@ dependencies = [
  "expect-test",
  "indexmap",
  "itertools",
+ "libtcmalloc-sys",
  "minifier",
  "pulldown-cmark-escape",
  "regex",
@@ -5183,8 +5236,8 @@ dependencies = [
  "nom",
  "serde",
  "spdx-expression",
- "strum",
- "strum_macros",
+ "strum 0.24.1",
+ "strum_macros 0.24.3",
  "thiserror 1.0.69",
  "uuid",
 ]
@@ -5260,6 +5313,15 @@ version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "063e6045c0e62079840579a7e47a355ae92f60eb74daaf156fb1e84ba164e63f"
 
+[[package]]
+name = "strum"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af23d6f6c1a224baef9d3f61e287d2761385a5b88fdab4eb4c6f11aeb54c4bcf"
+dependencies = [
+ "strum_macros 0.27.2",
+]
+
 [[package]]
 name = "strum_macros"
 version = "0.24.3"
@@ -5273,6 +5335,18 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "strum_macros"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7695ce3845ea4b33927c055a39dc438a45b059f7c1b3d91d38d10355fb8cbca7"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.106",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -5503,16 +5577,6 @@ dependencies = [
 name = "tier-check"
 version = "0.1.0"
 
-[[package]]
-name = "tikv-jemalloc-sys"
-version = "0.6.0+5.3.0-1-ge13ca993e8ccb9ba9847cc330696e02839f328f7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd3c60906412afa9c2b5b5a48ca6a5abe5736aec9eb48ad05037a677e52e4e2d"
-dependencies = [
- "cc",
- "libc",
-]
-
 [[package]]
 name = "tinystr"
 version = "0.8.1"

compiler/rustc/Cargo.toml

@@ -20,15 +20,14 @@ rustc_public = { path = "../rustc_public" }
 rustc_public_bridge = { path = "../rustc_public_bridge" }
 # tidy-alphabetical-end
 
-[dependencies.tikv-jemalloc-sys]
-version = "0.6.0"
-optional = true
-features = ['unprefixed_malloc_on_supported_platforms']
+
+[target.'cfg(all(target_os = "linux", target_arch = "x86_64"))'.dependencies]
+libtcmalloc-sys = { git = "https://github.com/0xdeafbeef/tcmalloc-better.git", rev = "781a440a0919", default-features = false, features = ["unprefixed_malloc_on_supported_platforms", "32k_pages", "override_cpp_operators"] }
 
 [features]
 # tidy-alphabetical-start
 check_only = ['rustc_driver_impl/check_only']
-jemalloc = ['dep:tikv-jemalloc-sys']
+jemalloc = []
 llvm = ['rustc_driver_impl/llvm']
 llvm_enzyme = ['rustc_driver_impl/llvm_enzyme']
 max_level_info = ['rustc_driver_impl/max_level_info']

compiler/rustc/src/main.rs

@@ -39,39 +39,32 @@
 
 fn main() {
     // See the comment at the top of this file for an explanation of this.
-    #[cfg(feature = "jemalloc")]
+    #[cfg(all(target_os = "linux", target_arch = "x86_64"))]
     {
         use std::os::raw::{c_int, c_void};
 
-        use tikv_jemalloc_sys as jemalloc_sys;
-
         #[used]
-        static _F1: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::calloc;
+        static _TCMALLOC_BRIDGE_ALLOC: unsafe extern "C" fn(usize, usize) -> *mut c_void =
+            libtcmalloc_sys::aligned_alloc;
         #[used]
-        static _F2: unsafe extern "C" fn(*mut *mut c_void, usize, usize) -> c_int =
-            jemalloc_sys::posix_memalign;
+        static CALLOC: unsafe extern "C" fn(usize, usize) -> *mut c_void = libtcmalloc_sys::calloc;
         #[used]
-        static _F3: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::aligned_alloc;
+        static TCMALLOC_POSIX_MEMALIGN: unsafe extern "C" fn(
+            *mut *mut c_void,
+            usize,
+            usize,
+        ) -> c_int = libtcmalloc_sys::posix_memalign;
         #[used]
-        static _F4: unsafe extern "C" fn(usize) -> *mut c_void = jemalloc_sys::malloc;
+        static _TCMALLOC_ALIGNED_ALLOC: unsafe extern "C" fn(usize, usize) -> *mut c_void =
+            libtcmalloc_sys::aligned_alloc;
         #[used]
-        static _F5: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void = jemalloc_sys::realloc;
+        static _TCMALLOC_MALLOC: unsafe extern "C" fn(usize) -> *mut c_void =
+            libtcmalloc_sys::malloc;
         #[used]
-        static _F6: unsafe extern "C" fn(*mut c_void) = jemalloc_sys::free;
-
-        // On OSX, jemalloc doesn't directly override malloc/free, but instead
-        // registers itself with the allocator's zone APIs in a ctor. However,
-        // the linker doesn't seem to consider ctors as "used" when statically
-        // linking, so we need to explicitly depend on the function.
-        #[cfg(target_os = "macos")]
-        {
-            unsafe extern "C" {
-                fn _rjem_je_zone_register();
-            }
-
-            #[used]
-            static _F7: unsafe extern "C" fn() = _rjem_je_zone_register;
-        }
+        static _TCMALLOC_REALLOC: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void =
+            libtcmalloc_sys::realloc;
+        #[used]
+        static _TCMALLOC_FREE: unsafe extern "C" fn(*mut c_void) = libtcmalloc_sys::free;
     }
 
     rustc_driver::main()

src/librustdoc/Cargo.toml

@@ -29,6 +29,9 @@ tracing-tree = "0.3.0"
 unicode-segmentation = "1.9"
 # tidy-alphabetical-end
 
+[target.'cfg(all(target_os = "linux", target_arch = "x86_64"))'.dependencies]
+libtcmalloc-sys = { git = "https://github.com/0xdeafbeef/tcmalloc-better.git", rev = "781a440a0919", default-features = false, features = ["unprefixed_malloc_on_supported_platforms", "32k_pages", "override_cpp_operators"] }
+
 [dependencies.tracing-subscriber]
 version = "0.3.3"
 default-features = false
@@ -41,8 +44,5 @@ minifier = { version = "0.3.2", default-features = false }
 [dev-dependencies]
 expect-test = "1.4.0"
 
-[features]
-jemalloc = []
-
 [package.metadata.rust-analyzer]
 rustc_private = true

src/librustdoc/lib.rs

@@ -62,11 +62,6 @@ extern crate rustc_target;
 extern crate rustc_trait_selection;
 extern crate test;
 
-// See docs in https://github.com/rust-lang/rust/blob/master/compiler/rustc/src/main.rs
-// about jemalloc.
-#[cfg(feature = "jemalloc")]
-extern crate tikv_jemalloc_sys as jemalloc_sys;
-
 use std::env::{self, VarError};
 use std::io::{self, IsTerminal};
 use std::path::Path;
@@ -126,34 +121,44 @@ mod visit_lib;
 
 pub fn main() {
     // See docs in https://github.com/rust-lang/rust/blob/master/compiler/rustc/src/main.rs
-    // about jemalloc.
-    #[cfg(feature = "jemalloc")]
+    // about tcmalloc.
+    #[cfg(all(target_os = "linux", target_arch = "x86_64"))]
     {
         use std::os::raw::{c_int, c_void};
 
+        unsafe extern "C" {
+            fn calloc(count: usize, size: usize) -> *mut c_void;
+            fn posix_memalign(ptr: *mut *mut c_void, alignment: usize, size: usize) -> c_int;
+            fn aligned_alloc(alignment: usize, size: usize) -> *mut c_void;
+            fn malloc(size: usize) -> *mut c_void;
+            fn realloc(ptr: *mut c_void, size: usize) -> *mut c_void;
+            fn free(ptr: *mut c_void);
+        }
+
         #[used]
-        static _F1: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::calloc;
+        static _TCMALLOC_BRIDGE_ALLOC: unsafe extern "C" fn(usize, usize) -> *mut c_void =
+            libtcmalloc_sys::BridgeTCMallocInternalNewAlignedNothrow;
         #[used]
-        static _F2: unsafe extern "C" fn(*mut *mut c_void, usize, usize) -> c_int =
-            jemalloc_sys::posix_memalign;
+        static _TCMALLOC_BRIDGE_DELETE_ALIGNED: unsafe extern "C" fn(*mut c_void, usize) =
+            libtcmalloc_sys::TCMallocInternalDeleteAligned;
+
         #[used]
-        static _F3: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::aligned_alloc;
+        static _TCMALLOC_CALLOC: unsafe extern "C" fn(usize, usize) -> *mut c_void = calloc;
         #[used]
-        static _F4: unsafe extern "C" fn(usize) -> *mut c_void = jemalloc_sys::malloc;
+        static _TCMALLOC_POSIX_MEMALIGN: unsafe extern "C" fn(
+            *mut *mut c_void,
+            usize,
+            usize,
+        ) -> c_int = posix_memalign;
         #[used]
-        static _F5: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void = jemalloc_sys::realloc;
+        static _TCMALLOC_ALIGNED_ALLOC: unsafe extern "C" fn(usize, usize) -> *mut c_void =
+            aligned_alloc;
         #[used]
-        static _F6: unsafe extern "C" fn(*mut c_void) = jemalloc_sys::free;
-
-        #[cfg(target_os = "macos")]
-        {
-            unsafe extern "C" {
-                fn _rjem_je_zone_register();
-            }
-
-            #[used]
-            static _F7: unsafe extern "C" fn() = _rjem_je_zone_register;
-        }
+        static _TCMALLOC_MALLOC: unsafe extern "C" fn(usize) -> *mut c_void = malloc;
+        #[used]
+        static _TCMALLOC_REALLOC: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void = realloc;
+        #[used]
+        static _TCMALLOC_FREE: unsafe extern "C" fn(*mut c_void) = free;
     }
 
     let mut early_dcx = EarlyDiagCtxt::new(ErrorOutputType::default());

src/tools/clippy/Cargo.toml

@@ -32,6 +32,9 @@ termize = "0.2"
 color-print = "0.3.4"
 anstream = "0.6.18"
 
+[target.'cfg(all(target_os = "linux", target_arch = "x86_64"))'.dependencies]
+libtcmalloc-sys = { git = "https://github.com/0xdeafbeef/tcmalloc-better.git", rev = "781a440a0919", default-features = false, features = ["unprefixed_malloc_on_supported_platforms", "32k_pages", "override_cpp_operators"] }
+
 [dev-dependencies]
 cargo_metadata = "0.18.1"
 ui_test = "0.30.2"
@@ -51,7 +54,6 @@ rustc_tools_util = { path = "rustc_tools_util", version = "0.4.2" }
 [features]
 integration = ["dep:tempfile"]
 internal = ["dep:clippy_lints_internal", "dep:tempfile"]
-jemalloc = []
 
 [package.metadata.rust-analyzer]
 # This package uses #[feature(rustc_private)]