core: Use array-based stack.
* src/mes.c (STACK_SIZE)[MES_ARRAY_STACK]: New variable. (g_stack_array): New variable. (g_stack): Change type to SCM*. (gc_push_frame)[MES_ARRAY_STACK]: Use g_stack_array, g_stack. (gc_peek_frame): Likewise. (gc_pop_frame): Likewise. * src/gc.c (gc_check): Likewise. (gc): Likewise.
This commit is contained in:
Jan Nieuwenhuizen
parent
a8ae42ff3c
commit
d73df09ab6
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@ -34,6 +34,7 @@
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int ARENA_SIZE = 200000; // 32b: 2MiB, 64b: 4 MiB
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int MAX_ARENA_SIZE = 300000000;
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long STACK_SIZE = 20000;
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int JAM_SIZE = 20000;
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int GC_SAFETY = 2000;
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@ -48,6 +49,7 @@ SCM g_symbols = 0;
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SCM g_macros = 0;
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SCM g_ports = 0;
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SCM g_stack = 0;
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SCM *g_stack_array = 0;
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// a/env
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SCM r0 = 0;
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// param 1
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22
src/gc.c
22
src/gc.c
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@ -23,6 +23,7 @@
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SCM
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gc_up_arena () ///((internal))
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{
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long old_arena_bytes = (ARENA_SIZE+JAM_SIZE)*sizeof (struct scm);
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if (ARENA_SIZE >> 1 < MAX_ARENA_SIZE >> 2)
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{
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ARENA_SIZE <<= 1;
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@ -31,7 +32,8 @@ gc_up_arena () ///((internal))
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}
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else
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ARENA_SIZE = MAX_ARENA_SIZE -JAM_SIZE;
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void *p = realloc (g_cells-1, (ARENA_SIZE+JAM_SIZE)*sizeof (struct scm));
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long arena_bytes = (ARENA_SIZE+JAM_SIZE)*sizeof (struct scm);
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void *p = realloc (g_cells-1, arena_bytes+STACK_SIZE*sizeof (SCM));
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if (!p)
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{
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eputs ("realloc failed, g_free=");
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@ -43,12 +45,13 @@ gc_up_arena () ///((internal))
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exit (1);
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}
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g_cells = (struct scm*)p;
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memcpy (p + arena_bytes, p + old_arena_bytes, STACK_SIZE*sizeof (SCM));
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g_cells++;
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return 0;
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}
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SCM
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void
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gc_flip () ///((internal))
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{
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if (g_debug > 2)
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@ -60,7 +63,6 @@ gc_flip () ///((internal))
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if (g_free > JAM_SIZE)
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JAM_SIZE = g_free + g_free / 2;
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memcpy (g_cells-1, g_news-1, (g_free+2)*sizeof (struct scm));
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return g_stack;
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}
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SCM
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@ -96,7 +98,7 @@ gc_relocate_cdr (SCM new, SCM cdr) ///((internal))
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return cell_unspecified;
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}
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SCM
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void
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gc_loop (SCM scan) ///((internal))
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{
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SCM car;
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@ -132,7 +134,7 @@ gc_loop (SCM scan) ///((internal))
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}
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scan++;
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}
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return gc_flip ();
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gc_flip ();
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}
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SCM
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@ -200,14 +202,8 @@ gc_ () ///((internal))
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g_symbols = gc_copy (g_symbols);
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g_macros = gc_copy (g_macros);
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g_ports = gc_copy (g_ports);
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SCM new = gc_copy (g_stack);
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if (g_debug > 3)
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{
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eputs ("new=");
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eputs (itoa (new));
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eputs ("\n");
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}
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g_stack = new;
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for (long i=g_stack; i<STACK_SIZE; i++)
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g_stack_array[i]= gc_copy (g_stack_array[i]);
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gc_loop (1);
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}
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87
src/mes.c
87
src/mes.c
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@ -26,11 +26,12 @@
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//#define MES_MINI 1
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#if POSIX
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long ARENA_SIZE = 100000000; // 64b: 4GiB
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long ARENA_SIZE = 100000000;
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#else
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long ARENA_SIZE = 200000; // 32b: 2MiB, 64b: 4 MiB
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#endif
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long MAX_ARENA_SIZE = 100000000;
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long STACK_SIZE = 20000;
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long JAM_SIZE = 20000;
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long GC_SAFETY = 2000;
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@ -44,6 +45,7 @@ long g_free = 0;
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SCM g_continuations = 0;
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SCM g_symbols = 0;
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SCM g_stack = 0;
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SCM *g_stack_array = 0;
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// a/env
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SCM r0 = 0;
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// param 1
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@ -667,11 +669,35 @@ check_apply (SCM f, SCM e) ///((internal))
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SCM
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gc_push_frame () ///((internal))
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{
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SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cons (m0, cell_nil)))));
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g_stack = cons (frame, g_stack);
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if (g_stack < 5)
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assert (!"STACK FULL");
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g_stack_array[--g_stack] = m0;
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g_stack_array[--g_stack] = r0;
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g_stack_array[--g_stack] = r1;
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g_stack_array[--g_stack] = r2;
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g_stack_array[--g_stack] = r3;
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return g_stack;
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}
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SCM
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gc_peek_frame () ///((internal))
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{
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r3 = g_stack_array[g_stack];
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r2 = g_stack_array[g_stack+1];
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r1 = g_stack_array[g_stack+2];
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r0 = g_stack_array[g_stack+3];
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m0 = g_stack_array[g_stack+4];
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return m0;
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}
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SCM
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gc_pop_frame () ///((internal))
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{
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gc_peek_frame ();
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g_stack += 5;
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return m0;
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}
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SCM
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append2 (SCM x, SCM y)
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{
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@ -920,26 +946,6 @@ push_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
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return cell_unspecified;
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}
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SCM
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gc_peek_frame () ///((internal))
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{
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SCM frame = CAR (g_stack);
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r1 = CAR (frame);
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r2 = CADR (frame);
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r3 = CAR (CDDR (frame));
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r0 = CADR (CDDR (frame));
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m0 = CAR (CDDR (CDDR (frame)));
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return frame;
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}
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SCM
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gc_pop_frame () ///((internal))
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{
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SCM frame = gc_peek_frame (g_stack);
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g_stack = CDR (g_stack);
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return frame;
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}
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char const* string_to_cstring (SCM s);
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SCM
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@ -1036,6 +1042,8 @@ expand_variable (SCM x, SCM formals) ///((internal))
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SCM struct_ref_ (SCM x, long i);
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SCM vector_ref_ (SCM x, long i);
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SCM make_vector__ (long k);
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SCM vector_set_x_ (SCM x, long i, SCM e);
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SCM
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eval_apply ()
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@ -1053,6 +1061,7 @@ eval_apply ()
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SCM p;
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SCM program;
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SCM sc_expand;
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SCM v;
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SCM x;
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int global_p;
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int macro_p;
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@ -1135,8 +1144,14 @@ eval_apply ()
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}
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else if (t == TCONTINUATION)
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{
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v = CONTINUATION (CAR (r1));
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if (LENGTH (v))
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{
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for (t=0; t < LENGTH (v); t++)
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g_stack_array[STACK_SIZE-LENGTH (v)+t] = vector_ref_ (v, t);
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g_stack = STACK_SIZE-LENGTH (v);
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}
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x = r1;
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g_stack = CONTINUATION (CAR (r1));
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gc_pop_frame ();
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r1 = CADR (x);
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goto eval_apply;
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@ -1581,11 +1596,18 @@ eval_apply ()
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call_with_current_continuation:
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gc_push_frame ();
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x = MAKE_CONTINUATION (g_continuations++);
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v = make_vector__ (STACK_SIZE-g_stack);
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for (t=g_stack; t < STACK_SIZE; t++)
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vector_set_x_ (v, t-g_stack, g_stack_array[t]);
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CONTINUATION (x) = v;
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gc_pop_frame ();
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push_cc (cons (CAR (r1), cons (x, cell_nil)), x, r0, cell_vm_call_with_current_continuation2);
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goto apply;
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call_with_current_continuation2:
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CONTINUATION (r2) = g_stack;
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v = make_vector__ (STACK_SIZE-g_stack);
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for (t=g_stack; t < STACK_SIZE; t++)
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vector_set_x_ (v, t-g_stack, g_stack_array[t]);
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CONTINUATION (r2) = v;
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goto vm_return;
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call_with_values:
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@ -1615,12 +1637,13 @@ apply (SCM f, SCM x, SCM a) ///((internal))
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SCM
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mes_g_stack (SCM a) ///((internal))
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{
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//r0 = a;
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//g_stack = g_free + ARENA_SIZE;
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g_stack = STACK_SIZE;
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r0 = a;
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r1 = MAKE_CHAR (0);
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r2 = MAKE_CHAR (0);
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r3 = MAKE_CHAR (0);
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g_stack = cons (cell_nil, cell_nil);
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return a;
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return r0;
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}
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// Environment setup
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@ -1637,7 +1660,11 @@ SCM g_symbol_max;
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SCM
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gc_init_cells () ///((internal))
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{
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g_cells = (struct scm *)malloc ((ARENA_SIZE+JAM_SIZE)*sizeof (struct scm));
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long arena_bytes = (ARENA_SIZE+JAM_SIZE)*sizeof (struct scm);
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void *p = malloc (arena_bytes+STACK_SIZE*sizeof (SCM));
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g_cells = (struct scm *)p;
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g_stack_array = (SCM*)(p + arena_bytes);
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TYPE (0) = TVECTOR;
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LENGTH (0) = 1000;
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VECTOR (0) = 0;
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@ -2470,6 +2497,8 @@ main (int argc, char *argv[])
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GC_SAFETY = ARENA_SIZE / 100;
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if (p = getenv ("MES_SAFETY"))
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GC_SAFETY = atoi (p);
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if (p = getenv ("MES_STACK"))
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STACK_SIZE = atoi (p);
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g_stdin = STDIN;
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g_stdout = STDOUT;
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