new_far.cpp

最新推荐文章于 2024-12-02 11:00:40 发布
原创 最新推荐文章于 2024-12-02 11:00:40 发布 · 412 阅读 · 0 ·
CC 4.0 BY-SA版权
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
文章标签：

#allocation #include

本文通过一个简单的C++程序演示了如何使用new关键字为字符数组分配内存，并通过循环不断尝试分配内存直至失败的过程。该实验有助于理解内存分配及内存耗尽的情况。

  name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <iostream.h>

void main(void)
 {
   char far *pointer;

   do
   {
     pointer = new far char[10000];

     if (pointer)
       cout << "Allocated 10,000 bytes/n";
     else
       cout << "Allocation failed/n";
   } while (pointer);
 }

 

R3LIVE源码解析(9) — R3LIVE中r3live_lio.cpp文件
几度春风里的博客
09-05 850
在r3live.cpp文件中创建LIO线程后，R3LIVE中的LIO线程本质上整体流程和FAST-LIO2基本一致。
【读代码】fast-planner-PRM算法解析-topo_prm.cpp
weixin_40570700的博客
05-02 964
初始化参数值double。
motion_planning_api_tutorial.cpp
热门推荐
RealMadridCF
11-08 1万+
motion_planning_api_tutorial.cpp #include <pluginlib/class_loader.h> #include <ros/ros.h> // MoveIt! #include <moveit/robot_model_loader/robot_model_loader.h> #include <moveit...
llama.cpp
AI工程化、开源分享、文档翻译、代码笔记
07-16 2289
一、关于 llama.cpp 支持的模型： **Multimodal models:** **Bindings:** **UI: ** **Tools:** 二、Demo 1、Typical run using LLaMA v2 13B on M2 Ultra 2、Demo of running both LLaMA-7B and whisper.cpp on a single M1 Pro MacBook 三、用法 1、基本用法 2、对话模式 3、网络服务 4、交互模式 5、持久互动 6、语法约束输出 四
Ardusub源码剖析——mode_guided.cpp
weixin_45813121的博客
12-02 1368
代码 #include "Sub.h" /* * Init and run calls for guided flight mode */ #define GUIDED_POSVEL_TIMEOUT_MS 3000 // guided mode's position-velocity controller times out after 3seconds with no new updates #define GUIDED_ATTITUDE_TIMEOUT_MS 1000 //
osgEarth例子学习-feature_elevation.earth
qq_36881934的博客
02-26 4102
例子学习第一天 今天是2019年2.26，接下来的一段时间开始研究关于在osgEarth中地形整（压平）的事儿，最后的应用就是开路，在osgEarth地球的表面，比如山上能自动生成道路之类的。 首先看下例子的效果介绍 还是很酷炫的，羡慕啊，开始干吧。 好久没摸oe了，只能一点一点来，在vs2010中随便选了个例子cpp，这里选择的是 但是里面有好多用不上的代码（应该吧），先注销掉。上面一堆包...
llama.cpp推理流程和常用函数介绍
weixin_40881369的博客
10-06 362
llama.cpp是一个高性能的CPU/GPU大语言模型推理框架，适用于消费级设备或边缘设备。开发者可以通过工具将各类开源大语言模型转换并量化成gguf格式的文件，然后通过llama.cpp实现本地推理。经过我的调研，相比较其它大模型落地方案，中小型研发企业使用llama.cpp可能是唯一的产品落地方案。关键词：“中小型研发企业”，“产品落地方案”。 中小型研发企业：相较动辄千万+的硬件投入，中...
Apollo Planning学习（8）-------ST_OBSTACLES_PROCESSOR
m0_71477431的博客
02-07 1733
学习记录
大模型部署手记（8）LLaMa2+Windows+llama.cpp+英文文本补齐
张小白
10-10 9398
组织机构：Meta（Facebook）模型：llama-2-7b下载：使用download.sh下载硬件环境：暗影精灵7PlusWindows版本：Windows 11家庭中文版 Insider Preview 22H2内存 32GGPU显卡：Nvidia GTX 3080 Laptop （16G）
#include <iostream> #include <vector> #include <unordered_map> #include <algorithm> using namespace std; typedef long long ll; int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); int n,m; cin>>n>>m; vector<pair<int, int>>episodes(n); for(int i=0;i<n;++i){ cin>>episodes[i].first; } for(int i=0;i<n;++i){ cin>>episodes[i].second; } unordered_map<int,ll>dp; dp[m]=0; ll max_profit=0; for(int i=0;i<n;++i){ unordered_map<int, ll> new_dp; for (const auto& entry:dp) { int c=entry.first; ll profit=entry.second; if (new_dp.find©==new_dp.end() || profit > new_dp[c]) { new_dp[c]=profit; } ll new_p=profit+(ll)c*episodes[i].first; int new_c=c/episodes[i].second; if (new_c>0) { if (new_dp.find(new_c)==new_dp.end()||new_p>new_dp[new_c]) { new_dp[new_c]=new_p; 帮我优化一段代码,要求功能不变的情况下尽可能降低时间复杂度
04-30
好的，我现在需要帮用户优化一段C++代码，保持功能不变的前提下尽可能降低时间复杂度。首先，我得仔细阅读用户提供的代码，理解它的功能以及当前可能存在的性能问题。...```cpp #include #include #include ...
#if BACKWARD_HAS_BFD == 1 template <> class TraceResolverLinuxImpl<trace_resolver_tag::libbfd>: public TraceResolverLinuxImplBase { public: TraceResolverLinuxImpl(): _bfd_loaded(false) {} template <class ST> void load_stacktrace(ST&) {} ResolvedTrace resolve(ResolvedTrace trace) { Dl_info symbol_info; // trace.addr is a virtual address in memory pointing to some code. // Let's try to find from which loaded object it comes from. // The loaded object can be yourself btw. if (!dladdr(trace.addr, &symbol_info)) { return trace; // dat broken trace... } // Now we get in symbol_info: // .dli_fname: // pathname of the shared object that contains the address. // .dli_fbase: // where the object is loaded in memory. // .dli_sname: // the name of the nearest symbol to trace.addr, we expect a // function name. // .dli_saddr: // the exact address corresponding to .dli_sname. if (symbol_info.dli_sname) { trace.object_function = demangle(symbol_info.dli_sname); } if (!symbol_info.dli_fname) { return trace; } trace.object_filename = symbol_info.dli_fname; bfd_fileobject& fobj = load_object_with_bfd(symbol_info.dli_fname); if (!fobj.handle) { return trace; // sad, we couldn't load the object :( } find_sym_result* details_selected; // to be filled. // trace.addr is the next instruction to be executed after returning // from the nested stack frame. In C++ this usually relate to the next // statement right after the function call that leaded to a new stack // frame. This is not usually what you want to see when printing out a // stacktrace... find_sym_result details_call_site = find_symbol_details(fobj, trace.addr, symbol_info.dli_fbase); details_selected = &details_call_site; #if BACKWARD_HAS_UNWIND == 0 // ...this is why we also try to resolve the symbol that is right // before the return address. If we are lucky enough, we will get the // line of the function that was called. But if the code is optimized, // we might get something absolutely not related since the compiler // can reschedule the return address with inline functions and // tail-call optimisation (among other things that I don't even know // or cannot even dream about with my tiny limited brain). find_sym_result details_adjusted_call_site = find_symbol_details(fobj, (void*) (uintptr_t(trace.addr) - 1), symbol_info.dli_fbase); // In debug mode, we should always get the right thing(TM). if (details_call_site.found && details_adjusted_call_site.found) { // Ok, we assume that details_adjusted_call_site is a better estimation. details_selected = &details_adjusted_call_site; trace.addr = (void*) (uintptr_t(trace.addr) - 1); } if (details_selected == &details_call_site && details_call_site.found) { // we have to re-resolve the symbol in order to reset some // internal state in BFD... so we can call backtrace_inliners // thereafter... details_call_site = find_symbol_details(fobj, trace.addr, symbol_info.dli_fbase); } #endif // BACKWARD_HAS_UNWIND if (details_selected->found) { if (details_selected->filename) { trace.source.filename = details_selected->filename; } trace.source.line = details_selected->line; if (details_selected->funcname) { // this time we get the name of the function where the code is // located, instead of the function were the address is // located. In short, if the code was inlined, we get the // function correspoding to the code. Else we already got in // trace.function. trace.source.function = demangle(details_selected->funcname); if (!symbol_info.dli_sname) { // for the case dladdr failed to find the symbol name of // the function, we might as well try to put something // here. trace.object_function = trace.source.function; } } // Maybe the source of the trace got inlined inside the function // (trace.source.function). Let's see if we can get all the inlined // calls along the way up to the initial call site. trace.inliners = backtrace_inliners(fobj, *details_selected); #if 0 if (trace.inliners.size() == 0) { // Maybe the trace was not inlined... or maybe it was and we // are lacking the debug information. Let's try to make the // world better and see if we can get the line number of the // function (trace.source.function) now. // // We will get the location of where the function start (to be // exact: the first instruction that really start the // function), not where the name of the function is defined. // This can be quite far away from the name of the function // btw. // // If the source of the function is the same as the source of // the trace, we cannot say if the trace was really inlined or // not. However, if the filename of the source is different // between the function and the trace... we can declare it as // an inliner. This is not 100% accurate, but better than // nothing. if (symbol_info.dli_saddr) { find_sym_result details = find_symbol_details(fobj, symbol_info.dli_saddr, symbol_info.dli_fbase); if (details.found) { ResolvedTrace::SourceLoc diy_inliner; diy_inliner.line = details.line; if (details.filename) { diy_inliner.filename = details.filename; } if (details.funcname) { diy_inliner.function = demangle(details.funcname); } else { diy_inliner.function = trace.source.function; } if (diy_inliner != trace.source) { trace.inliners.push_back(diy_inliner); } } } } #endif } return trace; } 详细注释上述代码并保留原有注释内容
最新发布
09-29
```cpp #if BACKWARD_HAS_BFD == 1 /** * BFD符号解析器模板特化实现 * 功能：通过libbfd库解析ELF文件的调试信息 * 特性： * - 支持动态链接库符号解析 * - 提供内联函数调用链展开 * - 自动处理地址重定位 ...
newarray.cpp
CCodes的专栏
11-08 824
  #include void main(void) {   char *array = new char[256];   int i;   for (i = 0; i      array[i] = A;   for (i = 0; i      cout  }
no_cont.c
CCodes的专栏
11-08 657
  #include void main(void) {   int counter;   printf("/nEven values/n");   for (counter = 1; counter      {       if (!(counter % 2))  // Even         printf("%d ", counter);     }   printf("/nO
ntensity.c
CCodes的专栏
11-08 581
 
no_redir.c
CCodes的专栏
11-08 546
 
number.c
CCodes的专栏
11-08 523
 
no_space.c
CCodes的专栏
11-08 514
 
nochange.c
CCodes的专栏
11-08 491
  #include void display_and_change(int first, int second, int third) {   printf("Original function values %d %d %d/n",     first, second, third);   first += 100;    second += 100;   third += 100;
no_stdio.c
CCodes的专栏
11-08 481
 
评论
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值