From 4c2f2fb867cfe64f217a246010a2e2722514dd90 Mon Sep 17 00:00:00 2001 From: Benji Dial Date: Tue, 17 Dec 2019 00:43:52 -0500 Subject: a good deal of process --- src/kernel/proc.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 src/kernel/proc.c (limited to 'src/kernel/proc.c') diff --git a/src/kernel/proc.c b/src/kernel/proc.c new file mode 100644 index 0000000..dba6b92 --- /dev/null +++ b/src/kernel/proc.c @@ -0,0 +1,43 @@ +/* +Copyright 2019 Benji Dial + +Permission to use, copy, modify, and/or distribute this +software for any purpose with or without fee is hereby +granted, provided that the above copyright notice and this +permission notice appear in all copies. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS +ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO +EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, +INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER +RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE +OF THIS SOFTWARE. +*/ + +#include "proc.h" +#include "mem.h" +#include "files.h" + +uint16_t new_proc(uint8_t *file) { + uint16_t handle = open_file(file); + if (handle) + for (uint16_t id = 3; id; ++id) + if (!(PROCS[id].memory_start)) { + uint32_t size = get_size(id); + void *mem = PROCS[id].memory_start = allocate_pages(PROCS[id].n_pages = (size - 1) / 4096 + 1, id); + read_file(handle, size, mem); + close_file(handle); + //Process file header and make new process + return id; + } + close_file(handle); + return 0; +} + +void end_proc(uint16_t id) { + deallocate_pages(PROCS[id].memory_start, PROCS[id].n_pages); + PROCS[id].memory_start = 0; +} \ No newline at end of file -- cgit v1.2.3