The expression &ptr->fld doesn't represent a dereference, instead it should be treated as (uint32_t)ptr + offsetof (ptr, fld). I am certain that GCC does this simplification, but I cannot find where in the code. The above ends up as ADDR_EXPR(COMPONENT_REF (INDIRECT_REF (ptr), fld)) in the AST, but at some point it should go through an...
When a database system writes a record to a page on disk, and one of the fields in that record is null, what value is used to represent that 'null' such that when the record is read back in, it knows that the field is 'null.' Perhaps it is dependent on the data-type of that field? ...
In GMP library.... how does internal execution of operations on integers ll be done?? like 6=0110,4=0100..and 6+4= 0110+0100.. what happens in case of multiplications,division and other operations!?? how does it controls overflow bits and other things ... ...
Assume the following entity classes: public class Player { public virtual int ID { get; set; } public virtual string Name { get; set; } public virtual Team Team { get; set; } } public class Team { public virtual int ID { get; set; } public virtual string City { get; set; } public virtual string Nickname { get; set; } } Assume t...
Hello all, I want to learn all advanced details of low-level programming so i want to be able to Learn advanced c/c++ Optimize my code with and without inline assembly Understand the internals of an exe, dll, thread, process Effeciently make use of technologies like SSE, 3DNow, MMX Debug&disassemble executables/libraries and understand w...
What is the context of a task that is saved on stack when a task is blocked in VxWorks? ...
In the pickle module documentation there is a snippet of example code: reader = pickle.load(open('save.p', 'rb')) which upon first read looked like it would allocate a system file descriptor, read its contents and then "leak" the open descriptor for there isn't any handle accessible to call close() upon. This got me wondering if there...
I'm using Entity Framework for creation of my Data Access Layer and I want for all of my classes to be internal. I know it is possible to manually assign it in the designer for each class. UPDATE I found that my initial statement But looks like it also requires to set internal modifier for each single property in every class! I hav...
Hi all, I have a little bit seen the representation of an array in memory with Windbg and SOS plugin. Here it is the c# : class myobj{ public int[] arr; } class Program{ static void Main(string[] args){ myobj o = new myobj(); o.arr = new int[7]; o.arr[0] = 0xFFFFFF; o.arr[1] = 0xFFFFFF; o.arr[2] = 0xFFFFFF; ...
If I dump the code generated by GCC for a virtual destructor (with -fdump-tree-original), I get something like this: ;; Function virtual Foo::~Foo() (null) ;; enabled by -tree-original { <<cleanup_point <<< Unknown tree: expr_stmt (void) (((struct Foo *) this)->_vptr.Foo = &_ZTV3Foo + 8) >>> >>; } <D.20148>:; if ((bool) (__in_chrg ...
I am trying to understand what is going on with CREATE INDEX internally. When I create a NONCLUSTERED index it shows as an INSERT in the execution plan as well as when I get the query test. DECLARE @sqltext VARBINARY(128) SELECT @sqltext = sql_handle FROM sys.sysprocesses s WHERE spid = 73 --73 is the process creating the index SELECT ...
I have an android phone and am thinking of a project in which I will need to modify the operating system and reinstall it to the phone. Is this possible to do so? Can i be sure my phone is not gonna give up on me? Thanks. ...
I'm building an Active Directory wrapper in VBNET 2.0 (can't use later .NET) in which I have the following: IUtilisateur IGroupe IUniteOrganisation These interfaces are implemented in internal classes (Friend in VBNET), so that I want to implement a façade in order to instiate each of the interfaces with their internal classes. This ...
In my most recent question: Unit Testing Best Practice? / C# InternalsVisibleTo() attribute for VBNET 2.0 while testing?, I was asking about InternalsVisibleToAttribute. I have read the documentation on how to use it, and everything is fine and understood. However, I can't instantiate my class Groupe from my Testing project. I want ...
When using keys %:: to get a list of the currently loaded root namespaces, the Internals:: package is loaded by default (along with UNIVERSAL:: and a few others). However, I haven't found any documentation for the functions in Internals:: keys %{Internals::} returns SvREFCNT hv_clear_placeholders hash_seed SvREADONLY HvREHASH rehash_se...
Hey, Can u suggest some articles or books about JVM internals: how it allocates memory, handles object inheritance, garbage collection, how it executes byte code and so on. ...
Hi all, Could someone explain me in depth how the system loads an .NET assembly. I mean : what dlls are used : I supposed first mscoree.dll, next mscorwks.dll and mscorjit.dll what methods in these dlls ? Thanks a lot ! ...
In the MEMORY_BASIC_INFORMATION structure one finds two PVOID variables, called BaseAddress and AllocationBaserespectively. I'm reading a book on Threading and its going over how to get the stackspace left on the stack in quite some detail, however there's something I'm not sure I understand correctly. The BaseAddress in the structure ...
Using sos, I can get the method table entry list for a particular class: !DumpMT -MD 1d3c58 PDB symbol for mscorwks.dll not loaded EEClass: 001d195c Module: 001d2f2c Name: Class1.B mdToken: 02000005 BaseSize: 0xc ComponentSize: 0x0 Number of IFaces in IFaceMap: 0 Slots in VTable: 7 -------------------------------------- MethodDesc Table...
Hi All, Just curious about how .NET CLR handles interfaces internally? Q1] What happens when CLR encounters something like : simple interface example. (same used below.) interface ISampleInterface { void SampleMethod(); } class ImplementationClass : ISampleInterface { // Explicit interface member imp...