Allocator that fails after N allocations, useful for making sure out of memory conditions are handled correctly.
To use this, first initialize it and get an allocator with
const failing_allocator = &FailingAllocator.init(<allocator>, <fail_index>).allocator;
Then use failing_allocator
anywhere you would have used a different allocator.
Fields
index: usize,
fail_index: usize,
allocated_bytes: usize,
freed_bytes: usize,
allocations: usize,
deallocations: usize,
stack_addresses: [num_stack_frames]usize,
has_induced_failure: bool,
Functions
fn getStackTrace(self: *FailingAllocator) std.builtin.StackTrace
Only valid once
has_induced_failure == true
fn init(internal_allocator: mem.Allocator, fail_index: usize) FailingAllocator
fail_index
is the number of successful allocations you can expect from this a…fail_index
is the number of successful allocations you can expect from this allocator. The next allocation will fail. For example, if this is called withfail_index
equal to 2, the following test will pass:var a = try failing_alloc.create(i32); var b = try failing_alloc.create(i32); testing.expectError(error.OutOfMemory, failing_alloc.create(i32));