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authorJubilee Young <workingjubilee@gmail.com>2024-06-05 23:06:15 -0700
committerJubilee Young <workingjubilee@gmail.com>2024-06-05 23:22:37 -0700
commit878107436a2c4ca60f1e87246fdb3480e1f2058b (patch)
tree91a082e3997b7587530b763de0992126ec630510
parent003a9027927a51de770a1cf22fccade616a5f0e3 (diff)
downloadrust-878107436a2c4ca60f1e87246fdb3480e1f2058b.tar.gz
rust-878107436a2c4ca60f1e87246fdb3480e1f2058b.zip
Raise `DEFAULT_MIN_STACK_SIZE` to at least 64KiB
Prevent copy-paste errors from producing new starved-for-resources
threaded platforms by raising `DEFAULT_MIN_STACK_SIZE` from 4096 bytes
to at least 64KiB.

Two platforms "affected" by this have no actual threads:
- UEFI
- "unsupported"

Platforms that this actually affects:
- wasm32-wasi with "atomics" enabled
- wasm32-wasi-p1-threads

Two exceptions:
- SGX: a "secure code execution" platform, stays at 4096B
- TEEOS: also a "secure code execution" platform, stays at 8192B

I believe either of these may have sufficiently "interesting" semantics
around threads, or significant external library support. Either would
mean making any choices here for them is suspect.
-rw-r--r--library/std/src/sys/pal/uefi/thread.rs2
-rw-r--r--library/std/src/sys/pal/unsupported/thread.rs2
-rw-r--r--library/std/src/sys/pal/wasi/thread.rs2
-rw-r--r--library/std/src/sys/pal/wasm/atomics/thread.rs2
4 files changed, 4 insertions, 4 deletions
diff --git a/library/std/src/sys/pal/uefi/thread.rs b/library/std/src/sys/pal/uefi/thread.rs
index edc736978a1..7d4006ff4b2 100644
--- a/library/std/src/sys/pal/uefi/thread.rs
+++ b/library/std/src/sys/pal/uefi/thread.rs
@@ -7,7 +7,7 @@ use crate::time::Duration;
 
 pub struct Thread(!);
 
-pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
+pub const DEFAULT_MIN_STACK_SIZE: usize = 64 * 1024;
 
 impl Thread {
     // unsafe: see thread::Builder::spawn_unchecked for safety requirements
diff --git a/library/std/src/sys/pal/unsupported/thread.rs b/library/std/src/sys/pal/unsupported/thread.rs
index ea939247199..89f8bad7026 100644
--- a/library/std/src/sys/pal/unsupported/thread.rs
+++ b/library/std/src/sys/pal/unsupported/thread.rs
@@ -6,7 +6,7 @@ use crate::time::Duration;
 
 pub struct Thread(!);
 
-pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
+pub const DEFAULT_MIN_STACK_SIZE: usize = 64 * 1024;
 
 impl Thread {
     // unsafe: see thread::Builder::spawn_unchecked for safety requirements
diff --git a/library/std/src/sys/pal/wasi/thread.rs b/library/std/src/sys/pal/wasi/thread.rs
index d45fb28b67e..975eef2451f 100644
--- a/library/std/src/sys/pal/wasi/thread.rs
+++ b/library/std/src/sys/pal/wasi/thread.rs
@@ -66,7 +66,7 @@ cfg_if::cfg_if! {
     }
 }
 
-pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
+pub const DEFAULT_MIN_STACK_SIZE: usize = 64 * 1024;
 
 impl Thread {
     // unsafe: see thread::Builder::spawn_unchecked for safety requirements
diff --git a/library/std/src/sys/pal/wasm/atomics/thread.rs b/library/std/src/sys/pal/wasm/atomics/thread.rs
index 49f936f1449..484bd08495e 100644
--- a/library/std/src/sys/pal/wasm/atomics/thread.rs
+++ b/library/std/src/sys/pal/wasm/atomics/thread.rs
@@ -6,7 +6,7 @@ use crate::time::Duration;
 
 pub struct Thread(!);
 
-pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
+pub const DEFAULT_MIN_STACK_SIZE: usize = 64 * 1024;
 
 impl Thread {
     // unsafe: see thread::Builder::spawn_unchecked for safety requirements