msg.h
1 /*
2  * SPDX-FileCopyrightText: 2022 HAW Hamburg
3  * SPDX-License-Identifier: LGPL-2.1-only
4  */
5 
6 #pragma once
7 
23 #include "msg.h"
24 #include "thread.h"
25 #include "bhp.h"
26 
27 #ifdef __cplusplus
28 extern "C" {
29 #endif
30 
34 #define BHP_MSG_BH_REQUEST 0x1539
35 
39 typedef struct {
40  bhp_t bhp;
41  kernel_pid_t pid;
42  msg_t msg;
43 } bhp_msg_t;
44 
53 void bhp_msg_init(bhp_msg_t *bhp_msg, bhp_cb_t cb, void *ctx);
54 
69 void bhp_msg_isr_cb(void *bhp_msg_ctx);
70 
77 static inline void bhp_msg_claim_thread(bhp_msg_t *bhp_msg, kernel_pid_t pid)
78 {
79  bhp_msg->pid = pid;
80 }
81 
91 static inline void bhp_msg_handler(msg_t *msg)
92 {
93  assert(msg->type == BHP_MSG_BH_REQUEST);
94  bhp_irq_handler(msg->content.ptr);
95 }
96 
97 #ifdef __cplusplus
98 }
99 #endif
100 
assert
#define assert(cond)
abort the program if assertion is false
Definition: assert.h:143
kernel_pid_t
int16_t kernel_pid_t
Unique process identifier.
Definition: sched.h:135
bhp_msg_handler
static void bhp_msg_handler(msg_t *msg)
Handle a Bottom Half Processor message with type BHP_MSG_BH_REQUEST.
Definition: msg.h:91
BHP_MSG_BH_REQUEST
#define BHP_MSG_BH_REQUEST
The message type to trigger Bottom Half Processing.
Definition: msg.h:34
bhp_msg_init
void bhp_msg_init(bhp_msg_t *bhp_msg, bhp_cb_t cb, void *ctx)
Init a Bottom Half Processor to be used with messages.
bhp_msg_isr_cb
void bhp_msg_isr_cb(void *bhp_msg_ctx)
Message based Bottom Half Processor ISR callback To be called from ISR in order to trigger the Bottom...
bhp_msg_claim_thread
static void bhp_msg_claim_thread(bhp_msg_t *bhp_msg, kernel_pid_t pid)
Claim a thread with a message queue to be used as Bottom Half Processor.
Definition: msg.h:77
bhp_irq_handler
static void bhp_irq_handler(bhp_t *bhp)
Call the IRQ handler associated to a Bottom Half Processor descriptor.
Definition: bhp.h:60
bhp_cb_t
void(* bhp_cb_t)(void *arg)
A Bottom Half Processor callback.
Definition: bhp.h:42
bhp_msg_t
Message based Bottom Half Processor descriptor.
Definition: msg.h:39
bhp_msg_t::bhp
bhp_t bhp
Bottom Half Processor descriptor.
Definition: msg.h:40
bhp_msg_t::msg
msg_t msg
Message containing the Bottom Half Processing request.
Definition: msg.h:42
bhp_msg_t::pid
kernel_pid_t pid
PID of the thread that process the Bottom Half Processor.
Definition: msg.h:41
bhp
Bottom Half Processor descriptor.
Definition: bhp.h:47
msg_t
Describes a message object which can be sent between threads.
Definition: msg.h:192
msg_t::type
uint16_t type
Type field.
Definition: msg.h:195
msg_t::content
union msg_t::@1 content
Content of the message.
msg_t::ptr
void * ptr
Pointer content field.
Definition: msg.h:197
msg.h
Definitions for parsing and composition of DNS messages.