89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
// SPDX-License-Identifier: ISC
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#pragma once
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#include <zinnia/compiler.h>
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#include <zinnia/utils.h>
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#include <stddef.h>
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enum init_action {
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INIT_EMPTY,
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INIT_CALLBACK,
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INIT_GATE,
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};
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struct boot_info;
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struct init_node;
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struct init_edge {
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struct init_node* source;
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struct init_node* target;
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bool propagates_disable;
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struct init_edge* next_in;
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struct init_edge* next_out;
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};
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struct init_edges {
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struct init_node* node;
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bool depends;
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size_t count;
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struct init_node* const* nodes;
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struct init_edge* edges;
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};
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struct init_node {
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const char* name;
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enum init_action action;
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union {
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void (*callback)(struct boot_info* info);
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bool (*gate)(struct boot_info* info);
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void* func;
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};
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size_t unsatisfied;
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bool wanted;
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bool done;
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bool disabled;
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bool executed;
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bool failed;
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struct init_edge* in_edges;
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struct init_edge* out_edges;
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struct init_node* queue_next;
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};
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#define INIT_EXTERN(node) extern struct init_node node[1]
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#define INIT_TASK(node, display, ...) \
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struct init_node node[1] = { \
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{.name = (display), \
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__VA_OPT__( \
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.action = _Generic( \
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(__VA_ARGS__), \
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void (*)(struct boot_info*): INIT_CALLBACK, \
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bool (*)(struct boot_info*): INIT_GATE \
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), \
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.func = (void*)(__VA_ARGS__), \
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)} \
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}; \
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[[__used, __section(".initgraph.nodes")]] \
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static struct init_node* const CONCAT(node, _initgraph_node) = node
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#define _INIT_EDGES(x, from, is_depends, ...) \
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static struct init_node* const CONCAT(x, _nodes)[] = {__VA_ARGS__}; \
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static struct init_edge CONCAT(x, _edges)[ARRAY_SIZE(CONCAT(x, _nodes))]; \
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static const struct init_edges x = { \
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.node = (from), \
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.depends = (is_depends), \
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.count = ARRAY_SIZE(CONCAT(x, _nodes)), \
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.nodes = CONCAT(x, _nodes), \
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.edges = CONCAT(x, _edges), \
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}; \
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[[__used, __section(".initgraph.edges")]] \
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static const struct init_edges* const CONCAT(x, _ptr) = &x
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#define INIT_DEPENDS(node, ...) _INIT_EDGES(UNIQUE_IDENT(init_edges), node, true, __VA_ARGS__)
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#define INIT_ENTAILS(node, ...) _INIT_EDGES(UNIQUE_IDENT(init_edges), node, false, __VA_ARGS__)
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void initgraph_run(struct init_node* goal, struct boot_info* info);
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void initgraph_panic();
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