From e67e3a62edf7d1948d721e0fc62917906798add1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Wed, 5 Jun 2024 23:27:21 -0400 Subject: kernel: vm: Add port of TLSF Signed-off-by: Ian Moffett --- sys/vm/vm_dynalloc.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 sys/vm/vm_dynalloc.c (limited to 'sys/vm/vm_dynalloc.c') diff --git a/sys/vm/vm_dynalloc.c b/sys/vm/vm_dynalloc.c new file mode 100644 index 0000000..0b8d668 --- /dev/null +++ b/sys/vm/vm_dynalloc.c @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include + +/* + * Dynamically allocates memory + * + * @sz: The amount of bytes to allocate + */ +void * +dynalloc(size_t sz) +{ + struct vm_ctx *vm_ctx = vm_get_ctx(); + void *tmp; + + spinlock_acquire(&vm_ctx->dynalloc_lock); + tmp = tlsf_malloc(vm_ctx->tlsf_ctx, sz); + spinlock_release(&vm_ctx->dynalloc_lock); + return tmp; +} + +/* + * Reallocates memory pool created by `dynalloc()' + * + * @old_ptr: Pointer to old pool. + * @newsize: Size of new pool. + */ +void * +dynrealloc(void *old_ptr, size_t newsize) +{ + struct vm_ctx *vm_ctx = vm_get_ctx(); + void *tmp; + + spinlock_acquire(&vm_ctx->dynalloc_lock); + tmp = tlsf_realloc(vm_ctx->tlsf_ctx, old_ptr, newsize); + spinlock_release(&vm_ctx->dynalloc_lock); + return tmp; +} + +/* + * Free dynamically allocated memory + * + * @ptr: Pointer to base of memory. + */ +void +dynfree(void *ptr) +{ + struct vm_ctx *vm_ctx = vm_get_ctx(); + + spinlock_acquire(&vm_ctx->dynalloc_lock); + tlsf_free(vm_ctx->tlsf_ctx, ptr); + spinlock_release(&vm_ctx->dynalloc_lock); +} -- cgit v1.2.3