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92 lines
1.9 KiB
92 lines
1.9 KiB
#ifndef SFRT_MODULE_H
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#define SFRT_MODULE_H
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#include <uv.h>
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#include "types.h"
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struct module {
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char name[MOD_NAME_MAX]; //not sure if i care for now.
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char path[MOD_PATH_MAX]; //to dlopen if it has not been opened already.
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void *dl_handle;
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mod_main_fn_t entry_fn;
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mod_glb_fn_t glb_init_fn;
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mod_mem_fn_t mem_init_fn;
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mod_tbl_fn_t tbl_init_fn;
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i32 nargs; //as per the specification somewhere.
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/* i32 nrets; */
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u32 stack_size; // a specification?
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u64 max_memory; //perhaps a specification of the module.
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u32 timeout; //again part of the module specification.
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u32 refcnt; //ref count how many instances exist here.
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u32 udpport;
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uv_udp_t udpsrv; // udp server to listen to requests.
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struct sockaddr_in srvaddr;
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// FIXME: for now, per-sandbox. no reason to have it be per-sandbox.
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struct indirect_table_entry indirect_table[INDIRECT_TABLE_SIZE];
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// TODO: what else?
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};
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// a runtime resource, perhaps use "malloc" on this?
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struct module *module_alloc(char *mod_name, char *mod_path, u32 udp_port, i32 nargs, i32 nrets, u32 stack_sz, u32 max_heap, u32 timeout/*, ...*/);
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// frees only if refcnt == 0
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void module_free(struct module *mod);
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struct module *module_find(char *name);
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static inline int
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module_is_valid(struct module *mod)
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{
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if (mod && mod->dl_handle && mod->entry_fn) return 1;
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return 0;
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}
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static inline void
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module_table_init(struct module *mod)
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{
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// called in a sandbox.
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mod->tbl_init_fn();
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}
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static inline void
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module_memory_init(struct module *mod)
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{
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// called in a sandbox.
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mod->mem_init_fn();
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}
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static inline i32
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module_entry(struct module *mod, i32 argc, i32 argv)
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{
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return mod->entry_fn(argc, argv);
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}
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// instantiate this module.
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static inline void
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module_acquire(struct module *mod)
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{
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// FIXME: atomic.
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mod->refcnt++;
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}
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static inline void
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module_release(struct module *mod)
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{
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// FIXME: atomic.
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mod->refcnt--;
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}
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static inline i32
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module_nargs(struct module *mod)
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{
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return mod->nargs;
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}
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#endif /* SFRT_MODULE_H */
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