process.c File Reference

#include <process.h>
#include <aucon.h>
#include <Mm/vmmngr.h>
#include <Mm/kmalloc.h>
#include <clean.h>
#include <Mm/pmmngr.h>
#include <string.h>
#include <_null.h>
#include <Hal/AA64/sched.h>
#include <Hal/AA64/aa64lowlevel.h>
#include <Mm/shm.h>
#include <loader.h>
#include <Ipc/postbox.h>
#include <Drivers/uart.h>
#include <timer.h>
#include <Cap/capability.h>
#include <Fs/Dev/devfs.h>
#include <Sound/sound.h>

Include dependency graph for process.c:

Macros
#define	USER_STACK_FLAG   (1ULL << 54 | 2ULL << 6 | 1ULL << 10 | PTE_NORMAL_MEM | 1)
#define	USER_STACK   0x000000A000000000
#define	USER_STACK   0x000000A000000000

Functions
void	AuAddProcess (AuProcess *parent, AuProcess *proc)
	AuAddProcess – adds process to kernel data structure.
void	AuRemoveProcess (AuProcess *parent, AuProcess *proc)
	AuRemoveProcess – removes a process from the process data structure.
AuProcess *	AuProcessFindByPID (AuProcess *proc, int pid)
	AuProcessFindByPID – finds a process by its pid.
AuProcess *	AuProcessFindByThread (AuProcess *proc, AA64Thread *thread)
	AuProcessFindByThread – finds a process by its main thread.
AuProcess *	AuProcessFindPID (int pid)
	AuProcessFindPID – finds a process by its pid from the process tree.
AuProcess *	AuProcessFindThread (AA64Thread *thread)
	AuProcessFindThread – finds a process by its main thread.
AuProcess *	AuProcessFindSubThread (AA64Thread *thread)
	AuProcessFindSubThread – find a process from its sub threads which contain a pointer to its process slot.
int	AuAllocateProcessID ()
	AuAllocateProcessID – allocates a new pid and return.
uint64_t *	CreateUserStack (AuProcess *proc, uint64_t *cr3)
	CreateUserStack – creates new user stack.
uint64_t *	CreateSubUserStack (AuProcess *proc, uint64_t *cr3)
	CreateSubUserStack – creates new user stack.
AuProcess *	AuCreateProcessSlot (AuProcess *parent, char *name)
	AuCreateProcessSlot – creates a blank process slot.
int	AuProcessGetFileDesc (AuProcess *proc)
	AuProcessGetFileDesc – returns a empty file descriptor from process slot, 0, 1 & 2 are reserved for terminal output.
int	AuCreateUserthread (AuProcess *proc, void(*entry)(), char *name, uint64_t arg)
	Creates a user mode thread.
void	AuProcessFreeKeResource (AA64Thread *thr)
	AuProcessFreeKeResource – free up allocated kernel resources.
void	AuProcessWakeWaiters (AuProcess *proc)
void	AuProcessExit (AuProcess *proc, bool schedulable)
	AuProcessExit – release resources and queue a process for reaping.
bool	AuProcessCanReap (AuProcess *proc)
AuProcess *	AuGetKillableProcess (void)
	AuGetKillableProcess – return the first process safe to reap.
int	AuProcessWaitForTermination (AuProcess *proc, int pid)
	AuProcessWaitForTermination – waits for termination of child processes.
int	AuProcGetNumProcessCount ()
	AuProcGetNumProcessCount – returns the total number of process created.
int	AuProcessFetch (AuProcessList *list, int num_proc_count)
	AuProcessFetch – fetch current process table status.
void	AuProcessReapWaitcount (AuProcess *proc, int num_count)
	AuProcessReapWaitCount – decrease waiting thread counts.

Variables
AuProcess *	proc_first
AuProcess *	proc_last
AuProcess *	root_proc

Detailed Description

BSD 2-Clause License

Copyright (c) 2022-2025, Manas Kamal Choudhury 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.

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 HOLDER 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.

Macro Definition Documentation

USER_STACK [1/2]

#define USER_STACK   0x000000A000000000

USER_STACK [2/2]

#define USER_STACK   0x000000A000000000

USER_STACK_FLAG

#define USER_STACK_FLAG   (1ULL << 54 | 2ULL << 6 | 1ULL << 10 | PTE_NORMAL_MEM | 1)

Function Documentation

AuAddProcess()

void AuAddProcess	(	AuProcess *	parent,
		AuProcess *	proc
	)

AuAddProcess – adds process to kernel data structure.

Parameters

root	– pointer to the root process
proc	– process to add

AuAllocateProcessID()

int AuAllocateProcessID

(

)

AuAllocateProcessID – allocates a new pid and return.

AuCreateProcessSlot()

AuProcess * AuCreateProcessSlot	(	AuProcess *	parent,
		char *	name
	)

AuCreateProcessSlot – creates a blank process slot.

Parameters

parent

– pointer to the parent process

confusing code :hehehehe

just inherit all parent credential's to belong to that uac and group

AuCreateUserthread()

int AuCreateUserthread	(	AuProcess *	proc,
		void(*)()	entry,
		char *	name,
		uint64_t	arg
	)

Creates a user mode thread.

Parameters

entry	– Entry point address
stack	– Stack address
cr3	– the top most page map level address
name	– name of the thread
priority	– (currently unused) thread's priority

AuGetKillableProcess()

AuProcess * AuGetKillableProcess

(

void

)

AuGetKillableProcess – return the first process safe to reap.

AuProcessCanReap()

bool AuProcessCanReap

(

AuProcess *

proc

)

AuProcessExit()

void AuProcessExit	(	AuProcess *	proc,
		bool	schedulable
	)

AuProcessExit – release resources and queue a process for reaping.

Parameters

proc	– process to exit
schedulable	– retained for the shared process API; the caller schedules

AuProcessFetch()

int AuProcessFetch	(	AuProcessList *	list,
		int	num_proc_count
	)

AuProcessFetch – fetch current process table status.

Parameters

list	– Pointer to AuProcessList
num_proc_count	– number of process count

AuProcessFindByPID()

AuProcess * AuProcessFindByPID	(	AuProcess *	proc,
		int	pid
	)

AuProcessFindByPID – finds a process by its pid.

Parameters

parent	– parent process to search in
pid	– process id to find

AuProcessFindByThread()

AuProcess * AuProcessFindByThread	(	AuProcess *	proc,
		AA64Thread *	thread
	)

AuProcessFindByThread – finds a process by its main thread.

Parameters

parent	– parent process to search in
thread	– thread to find

AuProcessFindPID()

AuProcess * AuProcessFindPID

(

int

pid

)

AuProcessFindPID – finds a process by its pid from the process tree.

Parameters

pid	– process id of the process

AuProcessFindSubThread()

AuProcess * AuProcessFindSubThread

(

AA64Thread *

thread

)

AuProcessFindSubThread – find a process from its sub threads which contain a pointer to its process slot.

Parameters

thread

– Pointer to sub thread

AuProcessFindThread()

AuProcess * AuProcessFindThread

(

AA64Thread *

thread

)

AuProcessFindThread – finds a process by its main thread.

Parameters

thread

– pointer to main thread

AuProcessFreeKeResource()

void AuProcessFreeKeResource

(

AA64Thread *

thr

)

AuProcessFreeKeResource – free up allocated kernel resources.

Parameters

thr	– Pointer to thread which allocated kernel resources

AuProcessGetFileDesc()

int AuProcessGetFileDesc

(

AuProcess *

proc

)

AuProcessGetFileDesc – returns a empty file descriptor from process slot, 0, 1 & 2 are reserved for terminal output.

Parameters

proc	– pointer to process slot

AuProcessReapWaitcount()

void AuProcessReapWaitcount	(	AuProcess *	proc,
		int	num_count
	)

AuProcessReapWaitCount – decrease waiting thread counts.

Parameters

proc	– desired process
num_count	– total number of threads to decrease

AuProcessWaitForTermination()

int AuProcessWaitForTermination	(	AuProcess *	proc,
		int	pid
	)

AuProcessWaitForTermination – waits for termination of child processes.

Parameters

proc	– pointer to process who needs to wait for termination
pid	– pid of the process, if -1 then any child process

AuProcessWakeWaiters()

void AuProcessWakeWaiters

(

AuProcess *

proc

)

AuProcGetNumProcessCount()

int AuProcGetNumProcessCount

(

)

AuProcGetNumProcessCount – returns the total number of process created.

AuRemoveProcess()

void AuRemoveProcess	(	AuProcess *	parent,
		AuProcess *	proc
	)

AuRemoveProcess – removes a process from the process data structure.

Parameters

parent	– pointer to the parent process
proc	– process to remove

CreateSubUserStack()

uint64_t * CreateSubUserStack	(	AuProcess *	proc,
		uint64_t *	cr3
	)

CreateSubUserStack – creates new user stack.

Parameters

proc	– Pointer to process slot
cr3	– pointer to the address space where to map

CreateUserStack()

uint64_t * CreateUserStack	(	AuProcess *	proc,
		uint64_t *	cr3
	)

CreateUserStack – creates new user stack.

Parameters

proc	– Pointer to process slot
cr3	– pointer to the address space where to map

Variable Documentation

proc_first

AuProcess* proc_first

proc_last

AuProcess* proc_last

root_proc

AuProcess* root_proc