Merge branch 'master' of github.com:mruby/mruby

examples/targets/ArduinoDue.rb

@@ -5,6 +5,8 @@
 MRuby::CrossBuild.new("Arduino Due") do |conf|
   toolchain :gcc
 
+  # Mac OS X
+  # ARDUINO_PATH = '/Applications/Arduino.app/Contents/Resources/Java'
   # GNU Linux
   ARDUINO_PATH = '/opt/arduino'
   BIN_PATH = "#{ARDUINO_PATH}/hardware/tools/g++_arm_none_eabi/bin"
@@ -19,12 +21,22 @@ MRuby::CrossBuild.new("Arduino Due") do |conf|
     cc.flags = %w(-g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 
                 -Dprintf=iprintf -mcpu=cortex-m3 -DF_CPU=84000000L -DARDUINO=152 -D__SAM3X8E__ -mthumb -DUSB_PID=0x003e -DUSB_VID=0x2341 -DUSBCON)
     cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+
+    #configuration for low memory environment
+    cc.defines << %w(MRB_HEAP_PAGE_SIZE=64)
+    cc.defines << %w(MRB_USE_IV_SEGLIST)
+    cc.defines << %w(KHASH_DEFAULT_SIZE=8)
+    cc.defines << %w(MRB_STR_BUF_MIN_SIZE=20)
+    cc.defines << %w(MRB_GC_STRESS)
+    #cc.defines << %w(DISABLE_STDIO) #if you dont need stdio.
+    #cc.defines << %w(POOL_PAGE_SIZE=1000) #effective only for use with mruby-eval
   end
 
   conf.cxx do |cxx|
     cxx.command = conf.cc.command.dup
     cxx.include_paths = conf.cc.include_paths.dup
     cxx.flags = conf.cc.flags.dup
+    cxx.defines = conf.cc.defines.dup
     cxx.compile_options = conf.cc.compile_options.dup
   end
 
@@ -36,4 +48,18 @@ MRuby::CrossBuild.new("Arduino Due") do |conf|
   #no executables
   conf.bins = []
 
+  #do not build executable test
+  conf.build_mrbtest_lib_only
+
+  #gems from core
+  conf.gem :core => "mruby-print" 
+  conf.gem :core => "mruby-math"
+  conf.gem :core => "mruby-enum-ext"
+
+  #light-weight regular expression
+  conf.gem :github => "masamitsu-murase/mruby-hs-regexp", :branch => "master" 
+
+  #Arduino API
+  #conf.gem :github =>"kyab/mruby-arduino", :branch => "master"
+
 end

examples/targets/chipKitMax32.rb

@@ -24,12 +24,22 @@ MRuby::CrossBuild.new("chipKitMax32") do |conf|
                 -fno-short-double -mprocessor=32MX795F512L -DF_CPU=80000000L -DARDUINO=23 -D_BOARD_MEGA_ 
                 -DMPIDEVER=0x01000202 -DMPIDE=23)
     cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+
+    #configuration for low memory environment
+    cc.defines << %w(MRB_HEAP_PAGE_SIZE=64)
+    cc.defines << %w(MRB_USE_IV_SEGLIST)
+    cc.defines << %w(KHASH_DEFAULT_SIZE=8)
+    cc.defines << %w(MRB_STR_BUF_MIN_SIZE=20)
+    cc.defines << %w(MRB_GC_STRESS)
+    #cc.defines << %w(DISABLE_STDIO) #if you dont need stdio.
+    #cc.defines << %w(POOL_PAGE_SIZE=1000) #effective only for use with mruby-eval
   end
 
   conf.cxx do |cxx|
     cxx.command = conf.cc.command.dup
     cxx.include_paths = conf.cc.include_paths.dup
     cxx.flags = conf.cc.flags.dup
+    cxx.defines = conf.cc.defines.dup
     cxx.compile_options = conf.cc.compile_options.dup
   end
 
@@ -41,4 +51,18 @@ MRuby::CrossBuild.new("chipKitMax32") do |conf|
   #no executables
   conf.bins = []
 
+  #do not build test executable 
+  conf.build_mrbtest_lib_only
+
+  #gems from core
+  conf.gem :core => "mruby-print" 
+  conf.gem :core => "mruby-math"
+  conf.gem :core => "mruby-enum-ext"
+
+  #light-weight regular expression
+  conf.gem :github => "masamitsu-murase/mruby-hs-regexp", :branch => "master" 
+
+  #Arduino API
+  #conf.gem :github =>"kyab/mruby-arduino", :branch => "master"
+
 end

src/gc.c

@@ -11,6 +11,7 @@
 # include <limits.h>
 #endif
 #include <string.h>
+#include <stdlib.h>
 #include "mruby.h"
 #include "mruby/array.h"
 #include "mruby/class.h"

src/load.c

@@ -539,7 +539,9 @@ mrb_read_irep_file(mrb_state *mrb, FILE* fp)
   size_t sirep;
   struct rite_section_header section_header;
   long fpos;
-  const size_t block_size = 1 << 14;
+  size_t block_size = 1 << 14;
+  const uint8_t block_fallback_count = 4;
+  int i;
   const size_t buf_size = sizeof(struct rite_binary_header);
 
   if ((mrb == NULL) || (fp == NULL)) {
@@ -564,7 +566,10 @@ mrb_read_irep_file(mrb_state *mrb, FILE* fp)
   /* verify CRC */
   fpos = ftell(fp);
   /* You don't need use SIZE_ERROR as block_size is enough small. */
-  buf = mrb_malloc(mrb, block_size);
+  for (i = 0; i < block_fallback_count; i++,block_size >>= 1){
+    buf = mrb_malloc(mrb, block_size);
+    if (buf) break;  
+  }
   if (!buf) {
     return MRB_DUMP_GENERAL_FAILURE;
   }

src/string.c

@@ -104,10 +104,9 @@ mrb_str_resize(mrb_state *mrb, mrb_value str, mrb_int len)
   mrb_str_modify(mrb, s);
   slen = s->len;
   if (len != slen) {
-    if (slen < len || slen -len > 1024) {
-      s->ptr = (char *)mrb_realloc(mrb, s->ptr, len+1);
+    if (slen < len || slen - len > 256) {
+      RESIZE_CAPA(s, len);
     }
-    s->aux.capa = len;
     s->len = len;
     s->ptr[len] = '\0';   /* sentinel */
   }
@@ -261,14 +260,7 @@ mrb_str_new_cstr(mrb_state *mrb, const char *p)
     len = 0;
   }
 
-  s = mrb_obj_alloc_string(mrb);
-  s->ptr = (char *)mrb_malloc(mrb, len+1);
-  if (p) {
-    memcpy(s->ptr, p, len);
-  }
-  s->ptr[len] = 0;
-  s->len = (mrb_int)len;
-  s->aux.capa = (mrb_int)len;
+  s = str_new(mrb, p, len);
 
   return mrb_obj_value(s);
 }