當使用螺紋鋼開始時，函數「dynamic_compile：from_string」失敗

Question

我使用dynamic_compile動態創建logger。它在通過螺紋鋼開始時告訴錯誤，但在正常啓動時正確。請幫忙看看。這是我的little demo project on github。

以下是我的步驟：

步驟報告錯誤：

~/rebar_test > rebar compile generate 
~/rebar_test > ./rel/server/bin/server console 

然後得到錯誤：

=CRASH REPORT==== 4-Dec-2012::20:37:19 === 
    crasher: 
    initial call: application_master:init/4 
    pid: <0.48.0> 
    registered_name: [] 
    exception exit: {bad_return, 
         {{yg_server_app,start,[normal,[]]}, 
         {'EXIT', 
          {undef, 
           [{logger,info_msg, 
             [d,29, 
             "Error compiling logger (~p): ~p~n", 
             [error,undef]], 
             []}, 
            {yg_server_app,start,2, 
             [{file,"src/yg_server_app.erl"}, 
             {line,20}]}, 
            {application_master,start_supervisor,3, 
             [{file,"application_master.erl"}, 
             {line,328}]}, 
            {application_master,start_the_app,5, 
             [{file,"application_master.erl"}, 
             {line,310}]}, 
            {application_master,start_it_new,7, 
             [{file,"application_master.erl"}, 
             {line,296}]}]}}}} 
     in function application_master:init/4 (application_master.erl, line 138) 
    ancestors: [<0.47.0>] 
    messages: [{'EXIT',<0.49.0>,normal}] 
    links: [<0.47.0>,<0.6.0>] 
    dictionary: [] 
    trap_exit: true 
    status: running 
    heap_size: 1597 
    stack_size: 24 
    reductions: 216 
    neighbours: 

正確步驟：

erl -pa apps/server/ebin -s server_app start 

它告訴正確的：

Mod=logger,Code=<<70,79,82,49,0,0,3,244,66,69,65,77,65,116,111,109,0,0,0,173,0, 
       0,0,19,6,108,111,103,103,101,114,3,103,101,116,8,116,101,115, 
       116,95,109,115,103,2,111,107,9,100,101,98,117,103,95,109,115, 
       103,8,105,110,102,111,95,109,115,103,11,119,97,114,110,105, 
       110,103,95,109,115,103,9,101,114,114,111,114,95,109,115,103, 
       12,99,114,105,116,105,99,97,108,95,109,115,103,6,101,114,108, 
       97,110,103,2,43,43,4,115,101,108,102,5,101,114,114,111,114,6, 
       110,111,116,105,102,121,12,103,114,111,117,112,95,108,101,97, 
       100,101,114,12,101,114,114,111,114,95,108,111,103,103,101, 
       114,9,103,101,110,95,101,118,101,110,116,11,109,111,100,117, 
       108,101,95,105,110,102,111,15,103,101,116,95,109,111,100,117, 
       108,101,95,105,110,102,111,0,0,0,67,111,100,101,0,0,1,31,0,0, 
       0,16,0,0,0,0,0,0,0,153,0,0,0,21,0,0,0,10,1,16,153,16,2,18,34, 
       0,1,32,64,17,3,19,1,48,153,32,2,18,50,64,1,64,64,66,3,19,1, 
       80,153,48,2,18,82,64,1,96,64,66,3,19,1,112,153,64,2,18,98,64, 
       1,128,64,66,3,19,1,144,153,80,2,18,114,64,1,160,64,66,3,19,1, 
       176,153,96,2,18,130,64,1,192,64,66,3,19,1,208,153,112,2,18, 
       146,64,1,224,12,48,64,64,3,36,64,19,20,64,71,0,19,64,35,3,64, 
       51,4,153,128,7,32,0,64,3,19,64,71,16,3,153,128,7,32,0,16,96, 
       16,9,16,19,69,20,4,51,69,36,51,51,69,19,51,35,64,3,19,64,210, 
       3,5,48,13,16,48,1,240,153,144,2,18,226,48,1,8,16,12,48,48,64, 
       35,4,64,19,20,64,3,36,153,160,7,0,32,16,128,16,9,16,19,70,48, 
       35,71,19,71,20,71,4,70,48,19,71,36,71,3,71,35,64,10,16,3,153, 
       176,8,32,48,48,1,8,17,153,0,2,18,10,18,0,1,8,18,64,18,3,153, 
       0,78,16,64,1,8,19,153,0,2,18,10,18,16,1,8,20,64,3,19,64,18,3, 
       153,0,78,32,80,3,0,83,116,114,84,0,0,0,0,73,109,112,84,0,0,0, 
       76,0,0,0,6,0,0,0,10,0,0,0,11,0,0,0,2,0,0,0,10,0,0,0,12,0,0,0, 
       0,0,0,0,10,0,0,0,15,0,0,0,0,0,0,0,17,0,0,0,14,0,0,0,2,0,0,0, 
       10,0,0,0,19,0,0,0,1,0,0,0,10,0,0,0,19,0,0,0,2,69,120,112,84, 
       0,0,0,112,0,0,0,9,0,0,0,18,0,0,0,1,0,0,0,20,0,0,0,18,0,0,0,0, 
       0,0,0,18,0,0,0,9,0,0,0,4,0,0,0,14,0,0,0,8,0,0,0,4,0,0,0,12,0, 
       0,0,7,0,0,0,4,0,0,0,10,0,0,0,6,0,0,0,4,0,0,0,8,0,0,0,5,0,0,0, 
       4,0,0,0,6,0,0,0,3,0,0,0,4,0,0,0,4,0,0,0,2,0,0,0,0,0,0,0,2,76, 
       105,116,84,0,0,0,42,0,0,0,36,120,156,99,96,96,96,98,96,96,96, 
       107,206,102,96,170,203,3,178,132,128,44,62,103,141,186,2,43, 
       48,210,84,176,82,0,0,101,252,7,63,0,0,76,111,99,84,0,0,0,16, 
       0,0,0,1,0,0,0,14,0,0,0,3,0,0,0,16,65,116,116,114,0,0,0,40, 
       131,108,0,0,0,1,104,2,100,0,3,118,115,110,108,0,0,0,1,110,16, 
       0,8,200,37,56,188,135,98,70,208,71,217,156,243,203,95,210, 
       106,106,67,73,110,102,0,0,0,123,131,108,0,0,0,4,104,2,100,0, 
       7,111,112,116,105,111,110,115,106,104,2,100,0,7,118,101,114, 
       115,105,111,110,107,0,5,52,46,56,46,50,104,2,100,0,4,116,105, 
       109,101,104,6,98,0,0,7,220,97,12,97,4,97,13,97,3,97,6,104,2, 
       100,0,6,115,111,117,114,99,101,107,0,43,47,85,115,101,114, 
       115,47,115,117,121,101,106,117,110,47,68,111,99,117,109,101, 
       110,116,115,47,112,114,111,106,101,99,116,47,114,101,98,97, 
       114,95,116,101,115,116,106,0,65,98,115,116,0,0,0,0,76,105, 
       110,101,0,0,0,43,0,0,0,0,0,0,0,0,0,0,0,16,0,0,0,11,0,0,0,1, 
       18,177,225,9,20,9,26,9,32,9,38,9,50,9,52,9,57,9,58,9,59,0,0,0> 

Answer 1

這引起了我的眼睛：

"Error compiling logger (~p): ~p~n", 
[error,undef]], 

我認爲你需要添加compiler到rel/reltool.config，否則你將無法在運行時編譯的模塊。