Merge pull request #3697 from cfallin/memfd-cow

memfd/madvise-based CoW pooling allocator

Cargo.lock

@@ -1624,6 +1624,15 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
+[[package]]
+name = "memfd"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6627dc657574b49d6ad27105ed671822be56e0d2547d413bfbf3e8d8fa92e7a"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "memmap2"
 version = "0.2.3"
@@ -3611,6 +3620,7 @@ dependencies = [
  "libc",
  "log",
  "mach",
+ "memfd",
  "memoffset",
  "more-asserts",
  "rand 0.8.3",