commit
323f39a2b3
11
py/gc.c
11
py/gc.c
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@ -240,7 +240,7 @@ void gc_info(gc_info_t *info) {
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void *gc_alloc(machine_uint_t n_bytes) {
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void *gc_alloc(machine_uint_t n_bytes) {
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machine_uint_t n_blocks = ((n_bytes + BYTES_PER_BLOCK - 1) & (~(BYTES_PER_BLOCK - 1))) / BYTES_PER_BLOCK;
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machine_uint_t n_blocks = ((n_bytes + BYTES_PER_BLOCK - 1) & (~(BYTES_PER_BLOCK - 1))) / BYTES_PER_BLOCK;
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//printf("gc_alloc(%u bytes -> %u blocks)\n", n_bytes, n_blocks);
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DEBUG_printf("gc_alloc(%u bytes -> %u blocks)\n", n_bytes, n_blocks);
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// check for 0 allocation
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// check for 0 allocation
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if (n_blocks == 0) {
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if (n_blocks == 0) {
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@ -267,6 +267,7 @@ void *gc_alloc(machine_uint_t n_bytes) {
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if (collected) {
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if (collected) {
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return NULL;
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return NULL;
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}
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}
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DEBUG_printf("gc_alloc(" UINT_FMT "): no free mem, triggering GC\n", n_bytes);
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gc_collect();
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gc_collect();
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collected = 1;
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collected = 1;
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}
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}
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@ -341,6 +342,14 @@ void *gc_realloc(void *ptr, machine_uint_t n_bytes) {
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}
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}
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}
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}
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void gc_dump_info() {
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gc_info_t info;
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gc_info(&info);
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printf("GC: total: " UINT_FMT ", used: " UINT_FMT ", free: " UINT_FMT "\n", info.total, info.used, info.free);
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printf(" No. of 1-blocks: " UINT_FMT ", 2-blocks: " UINT_FMT ", max blk sz: " UINT_FMT "\n",
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info.num_1block, info.num_2block, info.max_block);
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}
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#if DEBUG_PRINT
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#if DEBUG_PRINT
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static void gc_dump_at(void) {
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static void gc_dump_at(void) {
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for (machine_uint_t bl = 0; bl < gc_alloc_table_byte_len * BLOCKS_PER_ATB; bl++) {
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for (machine_uint_t bl = 0; bl < gc_alloc_table_byte_len * BLOCKS_PER_ATB; bl++) {
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16
py/malloc.c
16
py/malloc.c
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@ -19,6 +19,22 @@ static int peak_bytes_allocated = 0;
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#define UPDATE_PEAK() { if (current_bytes_allocated > peak_bytes_allocated) peak_bytes_allocated = current_bytes_allocated; }
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#define UPDATE_PEAK() { if (current_bytes_allocated > peak_bytes_allocated) peak_bytes_allocated = current_bytes_allocated; }
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#endif
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#endif
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#if MICROPY_ENABLE_GC
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#include "gc.h"
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// We redirect standard alloc functions to GC heap - just for the rest of
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// this module. In the rest of micropython source, system malloc can be
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// freely accessed - for interfacing with system and 3rd-party libs for
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// example. On the other hand, some (e.g. bare-metal) ports may use GC
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// heap as system heap, so, to avoid warnings, we do undef's first.
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#undef malloc
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#undef free
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#undef realloc
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#define malloc gc_alloc
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#define free gc_free
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#define realloc gc_realloc
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#endif // MICROPY_ENABLE_GC
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void *m_malloc(int num_bytes) {
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void *m_malloc(int num_bytes) {
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if (num_bytes == 0) {
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if (num_bytes == 0) {
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return NULL;
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return NULL;
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@ -29,18 +29,6 @@ void *realloc(void *ptr, size_t n) {
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#endif
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#endif
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void *malloc(size_t n) {
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return gc_alloc(n);
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}
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void free(void *ptr) {
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gc_free(ptr);
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}
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void *realloc(void *ptr, size_t n) {
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return gc_realloc(ptr, n);
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}
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void __assert_func(void) {
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void __assert_func(void) {
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printf("\nASSERT FAIL!");
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printf("\nASSERT FAIL!");
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for (;;) {
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for (;;) {
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@ -21,6 +21,14 @@ typedef float machine_float_t;
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machine_float_t machine_sqrt(machine_float_t x);
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machine_float_t machine_sqrt(machine_float_t x);
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// There is no classical C heap in bare-metal ports, only Python
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// garbage-collected heap. For completeness, emulate C heap via
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// GC heap. Note that MicroPython core never uses malloc() and friends,
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// so these defines are mostly to help extension module writers.
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#define malloc gc_alloc
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#define free gc_free
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#define realloc gc_realloc
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// board specific definitions
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// board specific definitions
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// choose 1 of these boards
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// choose 1 of these boards
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@ -2,10 +2,6 @@ typedef unsigned int size_t;
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void __assert_func(void);
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void __assert_func(void);
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void *malloc(size_t n);
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void free(void *ptr);
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void *realloc(void *ptr, size_t n);
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void *memcpy(void *dest, const void *src, size_t n);
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void *memcpy(void *dest, const void *src, size_t n);
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void *memmove(void *dest, const void *src, size_t n);
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void *memmove(void *dest, const void *src, size_t n);
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void *memset(void *s, int c, size_t n);
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void *memset(void *s, int c, size_t n);
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@ -35,6 +35,7 @@ endif
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# source files
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# source files
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SRC_C = \
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SRC_C = \
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main.c \
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main.c \
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gccollect.c \
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file.c \
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file.c \
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socket.c \
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socket.c \
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$(SRC_MOD)
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$(SRC_MOD)
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@ -0,0 +1,68 @@
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#include <stdint.h>
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#include <stdio.h>
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#include "misc.h"
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#include "mpconfig.h"
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#include "gc.h"
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#if MICROPY_ENABLE_GC
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extern void *stack_top;
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// We capture here callee-save registers, i.e. ones which may contain
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// interesting values held there by our callers. It doesn't make sense
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// to capture caller-saved registers, because they, well, put on the
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// stack already by the caller.
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#ifdef __x86_64__
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typedef machine_uint_t regs_t[6];
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void gc_helper_get_regs(regs_t arr) {
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register long rbx asm ("rbx");
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register long rbp asm ("rbp");
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register long r12 asm ("r12");
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register long r13 asm ("r13");
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register long r14 asm ("r14");
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register long r15 asm ("r15");
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arr[0] = rbx;
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arr[1] = rbp;
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arr[2] = r12;
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arr[3] = r13;
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arr[4] = r14;
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arr[5] = r15;
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}
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#endif
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#ifdef __i386__
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typedef machine_uint_t regs_t[4];
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void gc_helper_get_regs(regs_t arr) {
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register long ebx asm ("ebx");
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register long esi asm ("esi");
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register long edi asm ("edi");
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register long ebp asm ("ebp");
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arr[0] = ebx;
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arr[1] = esi;
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arr[2] = edi;
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arr[3] = ebp;
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}
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#endif
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void gc_collect(void) {
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//gc_dump_info();
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gc_collect_start();
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// this traces .data and .bss sections
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extern char __bss_start, _end;
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//printf(".bss: %p-%p\n", &__bss_start, &_end);
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gc_collect_root((void**)&__bss_start, ((uint32_t)&_end - (uint32_t)&__bss_start) / sizeof(uint32_t));
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regs_t regs;
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gc_helper_get_regs(regs);
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// GC stack (and regs because we captured them)
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gc_collect_root((void**)®s, ((uint32_t)stack_top - (uint32_t)®s) / sizeof(uint32_t));
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gc_collect_end();
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//printf("-----\n");
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//gc_dump_info();
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}
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#endif //MICROPY_ENABLE_GC
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28
unix/main.c
28
unix/main.c
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@ -15,12 +15,20 @@
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#include "runtime0.h"
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#include "runtime0.h"
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#include "runtime.h"
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#include "runtime.h"
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#include "repl.h"
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#include "repl.h"
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#include "gc.h"
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#if MICROPY_USE_READLINE
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#if MICROPY_USE_READLINE
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#include <readline/readline.h>
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#include <readline/readline.h>
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#include <readline/history.h>
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#include <readline/history.h>
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#endif
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#endif
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// Heap size of GC heap (if enabled)
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// TODO: allow to specify on command line
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#define HEAP_SIZE 128*1024
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// Stack top at the start of program
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void *stack_top;
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extern const mp_obj_fun_native_t mp_builtin_open_obj;
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extern const mp_obj_fun_native_t mp_builtin_open_obj;
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void file_init();
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void file_init();
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void microsocket_init();
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void microsocket_init();
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@ -217,7 +225,24 @@ mp_obj_t qstr_info(void) {
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return mp_const_none;
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return mp_const_none;
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}
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}
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#if MICROPY_ENABLE_GC
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// TODO: this doesn't belong here
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static mp_obj_t pyb_gc(void) {
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gc_collect();
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(pyb_gc_obj, pyb_gc);
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#endif
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int main(int argc, char **argv) {
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int main(int argc, char **argv) {
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volatile int stack_dummy;
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stack_top = (void*)&stack_dummy;
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#if MICROPY_ENABLE_GC
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char *heap = malloc(HEAP_SIZE);
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gc_init(heap, heap + HEAP_SIZE);
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#endif
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qstr_init();
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qstr_init();
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rt_init();
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rt_init();
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@ -263,6 +288,9 @@ int main(int argc, char **argv) {
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rt_store_name(qstr_from_str("test"), test_obj_new(42));
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rt_store_name(qstr_from_str("test"), test_obj_new(42));
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rt_store_name(qstr_from_str("mem_info"), rt_make_function_n(0, mem_info));
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rt_store_name(qstr_from_str("mem_info"), rt_make_function_n(0, mem_info));
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rt_store_name(qstr_from_str("qstr_info"), rt_make_function_n(0, qstr_info));
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rt_store_name(qstr_from_str("qstr_info"), rt_make_function_n(0, qstr_info));
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#if MICROPY_ENABLE_GC
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rt_store_name(qstr_from_str("gc"), (mp_obj_t)&pyb_gc_obj);
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#endif
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file_init();
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file_init();
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microsocket_init();
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microsocket_init();
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