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pass the shared buffer to zig directly

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Folkert 2022-07-27 17:16:12 +02:00
parent a60a49bce6
commit f7452b8889
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4 changed files with 9 additions and 24 deletions
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23
crates/compiler/builtins/bitcode/src/expect.zig
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@ -14,32 +14,17 @@ pub const PROT_WRITE: c_int = 2;
pub const MAP_SHARED: c_int = 0x0001;
// IMPORTANT: shared memory object names must begin with / and contain no other slashes!
var MMAPPED_FILE: []const u8 = "/roc_expect_buffer";
var SHARED_BUFFER: []u8 = undefined;
pub fn setMmappedFile(ptr: [*]u8, length: usize) callconv(.C) usize {
MMAPPED_FILE = ptr[0..length];
pub fn setSharedBuffer(ptr: [*]u8, length: usize) callconv(.C) usize {
SHARED_BUFFER = ptr[0..length];
// the rust side expects that a pointer is returned
return 0;
}
pub fn expectFailedStart() callconv(.C) [*]u8 {
const name = MMAPPED_FILE;
const shared_fd = shm_open(@ptrCast(*const i8, name), O_RDWR | O_CREAT, 0o666);
const shared_ptr = mmap(
null,
4096,
PROT_WRITE,
MAP_SHARED,
shared_fd,
0,
);
const ptr = @ptrCast([*]u8, shared_ptr);
return ptr;
return SHARED_BUFFER.ptr;
}
pub fn expectFailedFinalize() callconv(.C) void {

2
crates/compiler/builtins/bitcode/src/main.zig
View file

@ -171,7 +171,7 @@ comptime {
exportUtilsFn(expect.expectFailedFinalize, "expect_failed_finalize");
// sets the buffer used for expect failures
@export(expect.setMmappedFile, .{ .name = "set_mmapped_file", .linkage = .Weak });
@export(expect.setSharedBuffer, .{ .name = "set_shared_buffer", .linkage = .Weak });
}
if (builtin.target.cpu.arch == .aarch64) {