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wangyu-
2017-10-25 01:14:51 -05:00
parent 4dd37700e6
commit d6fc5dc072
3 changed files with 147 additions and 81 deletions
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77
fec_manager.cpp
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@@ -14,9 +14,9 @@
int g_fec_data_num=20;
int g_fec_redundant_num=10;
int g_fec_mtu=1250;
int g_fec_pending_num=200;
int g_fec_pending_time=8*1000; //8ms
int g_fec_type=1;
int g_fec_queue_len=200;
int g_fec_timeout=8*1000; //8ms
int g_fec_mode=1;
int dynamic_update_fec=1;
@@ -127,6 +127,15 @@ int blob_decode_t::output(int &n,char ** &s_arr,int *&len_arr)
return 0;
}
fec_encode_manager_t::~fec_encode_manager_t()
{
fd_manager.fd64_close(timer_fd64);
}
u64_t fec_encode_manager_t::get_timer_fd64()
{
return timer_fd64;
}
fec_encode_manager_t::fec_encode_manager_t()
{
//int timer_fd;
@@ -137,26 +146,18 @@ fec_encode_manager_t::fec_encode_manager_t()
}
timer_fd64=fd_manager.create(timer_fd);
re_init(fec_data_num,fec_redundant_num,fec_mtu,fec_pending_num,fec_pending_time,fec_type);
re_init(fec_data_num,fec_redundant_num,fec_mtu,fec_queue_len,fec_timeout,fec_mode);
seq=(u32_t)get_true_random_number(); //TODO temp solution for a bug.
}
fec_encode_manager_t::~fec_encode_manager_t()
{
fd_manager.fd64_close(timer_fd64);
}
u64_t fec_encode_manager_t::get_timer_fd64()
{
return timer_fd64;
}
int fec_encode_manager_t::re_init(int data_num,int redundant_num,int mtu,int pending_num,int pending_time,int type)
int fec_encode_manager_t::re_init(int data_num,int redundant_num,int mtu,int queue_len,int timeout,int mode)
{
fec_data_num=data_num;
fec_redundant_num=redundant_num;
fec_mtu=mtu;
fec_pending_num=pending_num;
fec_pending_time=pending_time;
fec_type=type;
fec_queue_len=queue_len;
fec_timeout=timeout;
fec_mode=mode;
assert(data_num+redundant_num<max_fec_packet_num);
counter=0;
@@ -178,16 +179,16 @@ int fec_encode_manager_t::append(char *s,int len/*,int &is_first_packet*/)
itimerspec its;
memset(&its.it_interval,0,sizeof(its.it_interval));
first_packet_time=get_current_time_us();
my_time_t tmp_time=fec_pending_time+first_packet_time;
my_time_t tmp_time=fec_timeout+first_packet_time;
its.it_value.tv_sec=tmp_time/1000000llu;
its.it_value.tv_nsec=(tmp_time%1000000llu)*1000llu;
timerfd_settime(timer_fd,TFD_TIMER_ABSTIME,&its,0);
}
if(fec_type==0)//for type 0 use blob
if(fec_mode==0)//for type 0 use blob
{
assert(blob_encode.input(s,len)==0);
}
else if(fec_type==1)//for tpe 1 use input_buf and counter
else if(fec_mode==1)//for tpe 1 use input_buf and counter
{
mylog(log_trace,"counter=%d\n",counter);
assert(len<=65535&&len>=0);
@@ -214,22 +215,22 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
fec_data_num=g_fec_data_num;
fec_redundant_num=g_fec_redundant_num;
fec_mtu=g_fec_mtu;
fec_pending_num=g_fec_pending_num;
fec_pending_time=g_fec_pending_time;
fec_type=g_fec_type;
fec_queue_len=g_fec_queue_len;
fec_timeout=g_fec_timeout;
fec_mode=g_fec_mode;
}
int about_to_fec=0;
int delayed_append=0;
//int counter_back=counter;
assert(fec_type==0||fec_type==1);
assert(fec_mode==0||fec_mode==1);
if(fec_type==0&& s!=0 &&counter==0&&blob_encode.get_shard_len(fec_data_num,len)>=fec_mtu)
if(fec_mode==0&& s!=0 &&counter==0&&blob_encode.get_shard_len(fec_data_num,len)>=fec_mtu)
{
mylog(log_warn,"message too long len=%d,ignored\n",len);
return -1;
}
if(fec_type==1&&s!=0&&len>=fec_mtu)
if(fec_mode==1&&s!=0&&len>=fec_mtu)
{
mylog(log_warn,"message too long len=%d fec_mtu=%d,ignored\n",len,fec_mtu);
return -1;
@@ -241,10 +242,10 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
}
if(s==0) about_to_fec=1;//now
if(fec_type==0&& blob_encode.get_shard_len(fec_data_num,len)>=fec_mtu) {about_to_fec=1; delayed_append=1;}//fec then add packet
if(fec_mode==0&& blob_encode.get_shard_len(fec_data_num,len)>=fec_mtu) {about_to_fec=1; delayed_append=1;}//fec then add packet
if(fec_type==0) assert(counter<fec_pending_num);//counter will never equal fec_pending_num,if that happens fec should already been done.
if(fec_type==1) assert(counter<fec_data_num);
if(fec_mode==0) assert(counter<fec_queue_len);//counter will never equal fec_pending_num,if that happens fec should already been done.
if(fec_mode==1) assert(counter<fec_data_num);
if(s!=0&&!delayed_append)
@@ -252,9 +253,9 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
append(s,len);
}
if(fec_type==0&& counter==fec_pending_num) about_to_fec=1;
if(fec_mode==0&& counter==fec_queue_len) about_to_fec=1;
if(fec_type==1&& counter==fec_data_num) about_to_fec=1;
if(fec_mode==1&& counter==fec_data_num) about_to_fec=1;
if(about_to_fec)
@@ -272,7 +273,7 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
int actual_data_num;
int actual_redundant_num;
if(fec_type==0)
if(fec_mode==0)
{
actual_data_num=fec_data_num;
@@ -319,8 +320,8 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
write_u32(input_buf[i] + tmp_idx, seq);
tmp_idx += sizeof(u32_t);
input_buf[i][tmp_idx++] = (unsigned char) fec_type;
if (fec_type == 1 && i < actual_data_num)
input_buf[i][tmp_idx++] = (unsigned char) fec_mode;
if (fec_mode == 1 && i < actual_data_num)
{
input_buf[i][tmp_idx++] = (unsigned char) 0;
input_buf[i][tmp_idx++] = (unsigned char) 0;
@@ -333,7 +334,7 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
tmp_output_buf[i]=input_buf[i]+tmp_idx; //////caution ,trick here.
if(fec_type==0)
if(fec_mode==0)
{
output_len[i]=tmp_idx+fec_len;
if(i<actual_data_num)
@@ -403,7 +404,7 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
memset(&its,0,sizeof(its));
timerfd_settime(timer_fd,TFD_TIMER_ABSTIME,&its,0);
if(encode_fast_send&&fec_type==1)
if(encode_fast_send&&fec_mode==1)
{
int packet_to_send[max_fec_packet_num+5]={0};
int packet_to_send_counter=0;
@@ -427,7 +428,7 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
}
else
{
if(encode_fast_send&&s!=0&&fec_type==1)
if(encode_fast_send&&s!=0&&fec_mode==1)
{
assert(counter>=1);
assert(counter<=255);
@@ -442,7 +443,7 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
write_u32(input_buf[input_buf_idx]+tmp_idx,seq);
tmp_idx+=sizeof(u32_t);
input_buf[input_buf_idx][tmp_idx++]=(unsigned char)fec_type;
input_buf[input_buf_idx][tmp_idx++]=(unsigned char)fec_mode;
input_buf[input_buf_idx][tmp_idx++]=(unsigned char)0;
input_buf[input_buf_idx][tmp_idx++]=(unsigned char)0;
input_buf[input_buf_idx][tmp_idx++]=(unsigned char)((u32_t)input_buf_idx);
@@ -464,7 +465,7 @@ int fec_encode_manager_t::input(char *s,int len/*,int &is_first_packet*/)
if(s!=0&&delayed_append)
{
assert(fec_type!=1);
assert(fec_mode!=1);
append(s,len);
}