Use Node.js in your end devices(QQ: 796448809)
Memory usage with libtuv on iotjs is described here and compared to libuv.
1) how to build
1-1) with libuv
./tools/build.py --buildtype=release --nochecktest
1-2) with libtuv
./tools/build.py --buildtype=release --nochecktest --tuv
2) memory usage measurement with valgrind running test httpserver
valgrind ./build/i686-linux/release/iotjs/iotjs ./test/run_pass/test_httpserver.js
2-1) with libuv
==5740== Memcheck, a memory error detector
==5740== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==5740== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright info
==5740== Command: ./build/i686-linux/release/iotjs/iotjs ./test/run_pass/test_httpserver.js
==5740==
==5740==
==5740== HEAP SUMMARY:
==5740== in use at exit: 0 bytes in 0 blocks
==5740== total heap usage: 959 allocs, 959 frees, 482,669 bytes allocated
==5740==
==5740== All heap blocks were freed -- no leaks are possible
==5740==
==5740== For counts of detected and suppressed errors, rerun with: -v
==5740== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
2-2) with libtuv
==7584== Memcheck, a memory error detector
==7584== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==7584== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright info
==7584== Command: ./build/i686-linux/release/iotjs/iotjs ./test/run_pass/test_httpserver.js
==7584==
==7584==
==7584== HEAP SUMMARY:
==7584== in use at exit: 0 bytes in 0 blocks
==7584== total heap usage: 955 allocs, 955 frees, 481,645 bytes allocated
==7584==
==7584== All heap blocks were freed -- no leaks are possible
==7584==
==7584== For counts of detected and suppressed errors, rerun with: -v
==7584== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
482,669 vs 481,645 = 1,024 bytes saved
1) build
./tools/build.py --buildtype=release --nochecktest --target-arch=arm --target-os=linux
./tools/build.py --buildtype=release --nochecktest --target-arch=arm --target-os=linux --tuv
2) binary size in i686-linux
3) binary size in arm-linux
1) use tuvtester as an application to compare.
2) codes changes to make both libuv.a and libtuv.a interchangeable.
2-1) as libtuv uses c++ compiler, wrap all codes with
extern "C" {
...
}
2-2) for libuv, give libuv.a by changing tuvtest.cmake file. use file from iotjs build.
target_link_libraries(${TUVTESTNAME} LINK_PUBLIC
#${TARGETLIBNAME}
"/(absolute path to libuv)/libuv.a"
${TUV_LINK_LIBS})
2-3) some functions that does not exist in libuv. add this bottom of in runner_main.cpp
#if 1
#define uv__handle_deinit(h) \
do { \
QUEUE_REMOVE(&(h)->handle_queue); \
QUEUE_INIT(&(h)->handle_queue); \
} \
while (0)
void uv_deinit(uv_loop_t* loop, uv_handle_t* handle) {
QUEUE* q;
uv_handle_t* h;
QUEUE_FOREACH(q, &loop->handles_queue) {
h = QUEUE_DATA(q, uv_handle_t, handle_queue);
if (h == handle) {
uv__handle_deinit(handle);
break;
}
}
}
#endif
2-4) remove test codes that does not run with libuv, tested codes are like this in runner_list.h
#define TEST_LIST_ALL(TE) \
TE(idle_basic, 5000) \
TE(timer_init, 5000) \
\
TE(condvar_2, 5000) \
TE(condvar_3, 5000) \
TE(cwd, 5000) \
\
TE(fs_file_noent, 5000) \
TE(fs_file_sync, 5000) \
TE(fs_file_async, 5000) \
TE(fs_file_write_null_buffer, 5000) \
TE(fs_stat_missing_path, 5000) \
TE(fs_open_dir, 5000) \
TE(fs_file_open_append, 5000) \
TE(fs_read_file_eof, 5000) \
\
TE(threadpool_queue_work_simple, 5000) \
// shutdown_eof should be last of tcp test, it'll stop "echo_sevrer"
#if defined(__linux__)
#define TEST_LIST_EXT(TE) \
#else
#define TEST_LIST_EXT(TE) \
#endif
#define HELPER_LIST_ALL(TE) \
3) measure
run with valgrind
valgrind ./build/i686-linux/release/bin/tuvtester
3-1) with libuv
==24952== Memcheck, a memory error detector
==24952== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==24952== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright info
==24952== Command: ./build/i686-linux/release/bin/tuvtester
==24952==
Run Helpers...
[idle_basic ]...OK
[timer_init ]...OK
[condvar_2 ]...OK
[condvar_3 ]...OK
[cwd ]...OK
[fs_file_noent ]...OK
[fs_file_sync ]...OK
[fs_file_async ]...OK
[fs_file_write_null_buffer ]...OK
[fs_stat_missing_path ]...OK
[fs_open_dir ]...OK
[fs_file_open_append ]...OK
[fs_read_file_eof ]...OK
[threadpool_queue_work_simple ]...OK
Waiting Helpers to end...
==24952==
==24952== HEAP SUMMARY:
==24952== in use at exit: 0 bytes in 0 blocks
==24952== total heap usage: 44 allocs, 44 frees, 1,727 bytes allocated
==24952==
==24952== All heap blocks were freed -- no leaks are possible
==24952==
==24952== For counts of detected and suppressed errors, rerun with: -v
==24952== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
3-2) with libtuv
==26621== Memcheck, a memory error detector
==26621== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==26621== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright info
==26621== Command: ./build/i686-linux/release/bin/tuvtester
==26621==
Run Helpers...
[idle_basic ]...OK
[timer_init ]...OK
[condvar_2 ]...OK
[condvar_3 ]...OK
[cwd ]...OK
[fs_file_noent ]...OK
[fs_file_sync ]...OK
[fs_file_async ]...OK
[fs_file_write_null_buffer ]...OK
[fs_stat_missing_path ]...OK
[fs_open_dir ]...OK
[fs_file_open_append ]...OK
[fs_read_file_eof ]...OK
[threadpool_queue_work_simple ]...OK
Waiting Helpers to end...
==26621==
==26621== HEAP SUMMARY:
==26621== in use at exit: 0 bytes in 0 blocks
==26621== total heap usage: 40 allocs, 40 frees, 991 bytes allocated
==26621==
==26621== All heap blocks were freed -- no leaks are possible
==26621==
==26621== For counts of detected and suppressed errors, rerun with: -v
3-3) result